Uric Acid Interpretation in Athletes: Why the High-Protein and High-Fructose Sports-Nutrition Diet Confounds the Standard Read, the Renal-vs-Metabolic Differential, and the Purine-Load Audit the Intake Must Run

A 34-year-old ultramarathon runner arrives at intake with a comprehensive metabolic panel drawn at a routine primary-care physical three weeks earlier. Her serum uric acid reads 8.9 mg/dL — flagged in bold on the report against a reference upper limit of 6.0 mg/dL for females — and her primary-care physician's cover note recommends a rheumatology referral for suspected hyperuricemia trending toward gout. She has no joint symptoms, no history of a gout attack, no first-degree family history of gout or renal stone disease, and no evident tophaceous deposits. Her creatinine is 1.1 mg/dL (mildly elevated by the sedentary reference), her eGFR is estimated at 61 mL/min/1.73 m² (also flagged), her BUN is 22 mg/dL, her fasting glucose is 88 mg/dL, and her lipid panel is unremarkable. Her nutrition history over the past nine months has held at 1.8 g protein per kg body weight per day (about 115 g/day), heavily weighted toward chicken, beef, canned tuna, and a whey isolate; she runs 70 to 90 miles per week with a peak block preceding a 100-mile ultra she completed six weeks before the draw; her race-week carbohydrate load drew heavily on fructose-containing sports drinks and gels; her fluid intake averages 3.5 L/day but her training-day sweat rate has never been formally measured; and her supplement stack includes creatine at 5 g/day, a pre-workout containing niacin, and a low-dose beetroot juice extract. The draw was taken 48 hours after her longest training run of the week.

She is in your office because she wants a second opinion before she pays the rheumatology copay for what she suspects is an athletic-physiology reading of a hyperuricemia flag, and because her online research has turned up conflicting information on whether her high-protein endurance-athlete diet is driving the elevation, whether the ultra-race-week fructose exposure is a factor, whether the sweat-concentration effect on a post-training draw explains the number, and whether any of it warrants a real intervention.

The standard uric acid interpretation — the sedentary reference range that flags values above roughly 6.0 mg/dL in females and 7.0 mg/dL in males as hyperuricemia — was calibrated against a general-population distribution where the dominant drivers are metabolic-syndrome-associated (visceral adiposity, insulin resistance, fructose intake, alcohol) and where the joint- or stone-disease outcome is the clinical concern. In the trained-athlete population that distribution shifts. Endurance athletes running high-volume aerobic work, high-protein diets, and race-week fructose loads present with uric acid values elevated above the sedentary reference in a substantial minority of cases without any evidence of joint or renal pathology. Draws taken within 24 to 72 hours of a hard training session or race carry a sweat-concentration and turnover overlay the sedentary reference does not anticipate. The primary-care read that reflexively assigns the value to the gout-differential pathway and generates the rheumatology referral misclassifies most of these cases.

Layer on the specific nutrition-history variables the intake must audit: the protein intake as a purine-load driver, the specific protein source mix (organ meats, sardines and anchovies, and shellfish carry the highest purine density; chicken, beef, and dairy sit in the moderate range; egg white and whey isolate sit low), the fructose exposure through sports drinks and gels in the race-taper and race-day windows, the alcohol pattern, the fluid balance and hydration status on the draw morning, the supplement stack for niacin and other uric-acid-elevating agents, and the medication list for diuretics, low-dose aspirin, and cyclosporine-class exposures that shift renal uric acid handling.

Most sports-RD intakes do not run a structured uric acid workup. The panel arrives from primary care, the uric acid flag generates the reflexive rheumatology or "cut back on red meat and shellfish" recommendation, the fructose-through-sports-drink driver is not audited, the sweat-concentration draw-timing artifact is not corrected, the [kidney function workup](/blog/kidney-function-workup-in-athletes) is not integrated with the read even where the creatinine and eGFR are also flagged, and the case gets managed as a diet-modification problem when the actual clinical picture sits in the intersection of purine load, fructose load, hydration status on the draw morning, renal handling, and (in a subset of cases) a genuine underactivity of urate excretion that the elevation is finally surfacing.

This post is the uric acid workup I run when the standard panel returns a hyperuricemia flag in an endurance or high-protein-diet athlete and the primary-care assumption of a joint- or renal-disease differential does not fit the picture. The five-dimension interpretive frame, the purine-load audit against the protein-source mix, the fructose-load overlay against the race-week and daily pattern, the sweat-concentration correction against the draw timing, the four-quadrant clinical matrix, the medical-coordination triggers, the common counseling mistakes, and the SOAP pattern that documents the case defensibly against the rheumatology-referral read.

Why the standard uric acid interpretation under-flags the athletic case

Three structural reasons.

The reference range is sedentary-calibrated. The 6.0 mg/dL upper limit for females and 7.0 mg/dL upper limit for males were derived from general-population reference distributions where the median physical-activity load is far below the endurance-athlete pattern, and where the median protein intake and macronutrient mix does not match the sports-nutrition or ultra-endurance pattern. Trained endurance athletes running high-volume aerobic work and consuming protein intakes at 1.6 to 2.2 g/kg present with uric acid distributions that shift right of the sedentary reference without any evidence of gout, renal stone disease, or metabolic pathology. The reference range flags a physiological adaptation as a diagnostic finding in a meaningful fraction of the athletic population.

Uric acid is generated from purine metabolism. Every dietary purine load, every high-turnover cellular process, and every exercise-induced ATP degradation cascade releases purines that are metabolized through xanthine oxidase to uric acid. Endurance athletes running hard training weeks generate a substantial exercise-driven purine turnover that raises the acute uric acid load on the timescale of hours after a session. High-protein diets built on organ meats, sardines, anchovies, mackerel, herring, mussels, scallops, or high-intake beef and pork carry a dietary purine load that raises the baseline. The intake that does not audit the protein source composition misses the highest-yield modifiable driver.

Fructose drives hepatic de novo uric acid synthesis through a pathway most primary-care reads do not integrate. Fructose metabolism in the liver phosphorylates through fructokinase, depletes ATP, and drives AMP degradation into IMP and downstream through hypoxanthine and xanthine into uric acid. The fructose-load elevation is dose-dependent and acute; the athlete on race-week carbohydrate loading with sports drinks and gels containing high-fructose corn syrup or free fructose can be running a fructose intake at 100 to 200 g/day during the taper, race day, and race-day-plus-one. The uric acid elevation from this exposure resolves on the timescale of days to a week off the fructose load. The primary-care read that focuses the counseling on "cut back on red meat and shellfish" and does not audit the sports-drink and gel exposure misses the highest-yield driver in the race-week case.

The five-dimension uric acid workup

Dimension 1: Read against the draw timing and the sweat-concentration overlay. The uric acid draw taken within 24 to 72 hours of a hard training session or race in an incompletely rehydrated athlete carries an acute sweat-concentration and turnover overlay. Fluid-balance status on the draw morning, the interval between the last hard session and the draw, and the calculated or estimated sweat loss across the training week all sit in the interpretation. The 34-year-old ultramarathon runner drawn 48 hours after her longest training run of the week is inside the window where the acute overlay is meaningful; the workup does not stop there, but the interpretation weight-adjusts for the timing. Redraw 5 to 7 days off a hard session in the fully rehydrated state where the picture is ambiguous, and separate the acute overlay from the chronic baseline.

Dimension 2: Purine-load audit against the protein-source composition. Purine density varies by an order of magnitude across the common protein sources in the sports-nutrition intake. The highest-purine sources are organ meats (liver, kidney, sweetbreads, brain, heart), the small oily fish (sardines, anchovies, herring, mackerel, smelts), and some shellfish (mussels, scallops, oysters). The moderate-purine sources are the muscle meats (beef, pork, lamb, chicken, turkey, fish generally), which sit in a middle band. The low-purine sources are the dairy proteins (yogurt, milk, cheese), the isolated whey and casein proteins, and the egg proteins (particularly egg white). Legumes and mushrooms carry moderate plant-derived purine but do not raise uric acid to the same degree as animal-source purines, likely through effects on renal excretion. The intake that captures the daily protein source composition can quantify the purine load and identify whether a shift toward the low-purine dairy, whey isolate, and egg-white sources meaningfully changes the picture without dropping the total protein intake below the athletic target.

Dimension 3: Fructose-load overlay against the sports-drink and race-week pattern. The direct-question fructose audit needs to capture the specific sports-drink and gel formulations, the daily and race-week volumes, the sweetened-beverage intake outside of training, the whole-fruit and dried-fruit intake, and any high-fructose corn syrup or agave exposure in the day-to-day diet. The audit is specific: many sports drinks and gels contain a glucose-fructose blend (often 2:1 or similar) that is intentionally formulated to raise total carbohydrate absorption through the parallel SGLT1 and GLUT5 pathways; the fructose fraction of that carbohydrate is the uric-acid-relevant exposure. The race-week case where the athlete is running 100 to 200 g/day of added fructose across the taper, race day, and recovery drives an acute uric acid elevation that resolves in the week off the exposure. The workup that separates the fructose-driven acute elevation from the chronic protein-driven baseline runs the audit at both timepoints.

Dimension 4: Renal excretion and the underexcretor-vs-overproducer differential. Uric acid is cleared primarily through the kidney with a small fecal contribution. The distinction between the underexcretor (renal-handling-limited) case and the overproducer (dietary-purine or metabolic-driven) case is clinically meaningful and can be estimated from a spot urine uric acid and creatinine (fractional excretion of uric acid) or a 24-hour urine uric acid where the picture warrants. Most primary-care panels do not run this. The workup that suspects an underexcretor pattern — chronic hyperuricemia stable over serial draws, no dietary or fructose drivers apparent, and eGFR that suggests renal-handling contribution — coordinates with the medical team on the urinary uric acid measurement. Loop and thiazide diuretics, low-dose aspirin, cyclosporine and tacrolimus, and pyrazinamide reduce renal uric acid excretion and belong in the medication inventory.

Dimension 5: Metabolic-syndrome and insulin-resistance overlay. Insulin resistance is a well-established driver of renal uric acid reabsorption; the metabolic-syndrome-associated hyperuricemia case runs through this pathway and correlates with visceral adiposity, elevated triglyceride-to-HDL ratio, and elevated fasting insulin or HOMA-IR. The lean-appearing endurance athlete is not automatically eliminated from this differential — the [insulin resistance workup](/blog/insulin-resistance-workup-in-athletes) sits adjacent to the uric acid read and should run in parallel where the fasting insulin, triglyceride-to-HDL ratio, or waist-to-height ratio warrants. Alcohol intake, particularly beer, drives hyperuricemia through both a purine load (beer contains guanosine) and a lactate-driven inhibition of renal uric acid excretion; the alcohol history sits in the read.

The four-quadrant clinical decision matrix

Quadrant 1: Uric acid modestly elevated (up to approximately 1.5x the sedentary reference), draw taken within 72 hours of a hard session in an incompletely rehydrated athlete, no joint symptoms, no history of gout or renal stone disease, no metabolic-syndrome flags, protein-source composition includes moderate purine load but not organ-meat or small-oily-fish dominance, fructose exposure through sports drinks in the recent training or race window. The pattern is consistent with a combined draw-timing and fructose-and-training-load overlay. Redraw 5 to 7 days off a hard session, off the fructose-load exposure, and in the fully rehydrated state; audit the protein source composition and the daily fructose intake; document the corrected value and the trajectory. This is the ultramarathon runner's most likely case pending the redraw.

Quadrant 2: Uric acid persistently elevated on redraw off the training and fructose exposure, no joint symptoms or history of gout, dietary purine load or fructose load identifiable and modifiable, no metabolic-syndrome or renal-handling flags. The pattern is consistent with a dietary-driver-dominant hyperuricemia amenable to nutrition intervention. Shift the protein-source composition toward the low-purine dairy, whey isolate, and egg-white sources without dropping total protein below the athletic target; reduce the fructose-through-sports-drink exposure to the training window where the carbohydrate demand justifies it; increase the daily fluid intake to the training-load-adjusted target; recheck in 6 to 12 weeks.

Quadrant 3: Uric acid markedly elevated (above 10 mg/dL sustained), or clinical gout attack, or tophaceous deposits, or renal stone history, or renal-handling flags on urinary uric acid, or metabolic-syndrome-associated pattern with hyperuricemia as one component. Medical coordination on the extended workup. The sports-RD role is to surface the dietary and lifestyle drivers to the medical team, run the parallel dietary intervention, and support the pharmacologic management plan (allopurinol, febuxostat, or others) with the appropriate dietary and hydration adjustments.

Quadrant 4: Ambiguous panel, mixed signals, or the metabolic-vs-renal-vs-dietary differential cannot be resolved on the initial workup. Order the extended follow-on — spot or 24-hour urinary uric acid, comprehensive metabolic panel including fasting insulin and lipid panel, hydration-status assessment, [kidney function workup](/blog/kidney-function-workup-in-athletes) integrated with the read, medication and supplement audit for uric-acid-elevating agents, and a repeat panel at the corrected draw-timing window. Coordinate with primary care on the extended workup.

The purine-load audit — the practical categories

The intake needs the direct source-mix inventory to quantify the purine load.

High-purine sources (recommend limitation or elimination in the intervention case). Liver, kidney, sweetbreads, brain, heart. Sardines, anchovies, herring, mackerel, smelts, sprats. Mussels, scallops, oysters. Yeast-based extracts and brewer's yeast. Meat gravies, broths, and consommés made from bone-and-organ reductions.

Moderate-purine sources (audit the daily volume; the endurance athlete on 8 to 10 oz of beef or chicken per day sits in a meaningful cumulative load). Beef, pork, lamb, veal. Chicken, turkey, duck. Fish generally (tuna, salmon, trout, halibut). Shellfish other than the high-purine set. Legumes (lentils, beans, peas). Mushrooms. Whole-grain products in high volumes.

Low-purine sources (safe to build the protein intake around in the intervention case). Dairy (milk, yogurt, cheese) — associated with reduced hyperuricemia risk in observational cohorts, likely through a uricosuric effect. Whey isolate and casein protein. Egg white (egg yolk sits slightly higher but is still low). Vegetable proteins outside the legume high-volume case. Fruits (fructose-load caveat below).

Fructose-load audit — the specific product categories. Sports drinks and gels: check the ingredient list for high-fructose corn syrup, fructose, or a stated glucose-fructose ratio; typical formulations run 20 to 30 g carbohydrate per 8 oz drink, and race-day intakes can reach 60 to 90 g/hour carbohydrate through the combined drink-and-gel protocol. Sweetened beverages: soda, sweetened tea, energy drinks, agave-sweetened products. Whole fruits and dried fruits: apples, pears, dates, raisins, and fruit juices carry the highest fructose density in the whole-food space. Honey and agave syrup as added sweeteners.

When to refer to medical

Five signals warrant medical referral beyond the dietetic workup.

Any clinical gout attack (acute mono-articular pain, warmth, and swelling most commonly at the first metatarsophalangeal joint, midfoot, ankle, or knee), tophaceous deposits, or a history of renal uric acid stones. Rheumatology or urology as clinically indicated, with the sports-RD parallel-running the dietary and hydration workup.

Uric acid sustained above 10 mg/dL on serial draws, or a rapidly rising trajectory across serial draws, or hyperuricemia in the setting of metabolic-syndrome co-flags. Medical workup for the extended differential and consideration of urate-lowering pharmacotherapy.

Elevated uric acid with renal-handling flags (eGFR reduction not explained by the trained-athlete creatinine artifact, elevated creatinine with muscular contribution audited, or an abnormal urinary uric acid). Nephrology coordination on the renal-handling workup.

Suspected medication-induced hyperuricemia (diuretic use, low-dose aspirin, cyclosporine or tacrolimus, pyrazinamide). Coordinate with prescribing physician on the substitution or dose adjustment plan where clinically feasible.

Persistent hyperuricemia on serial redraws after the identified dietary drivers have been addressed for 12 weeks. The dietetic non-responder warrants the extended medical workup.

Common counseling mistakes

Reading uric acid in isolation and generating the rheumatology referral without the draw-timing, fructose, and protein-source audit. The primary-care read that flags the value and refers without running the athletic-physiology corrections generates copay and clinic-visit burden for a case that resolves on the redraw off the training and fructose exposure.

Prescribing "cut back on red meat and shellfish" without auditing the actual protein-source composition and the fructose-through-sports-drink exposure. The generic recommendation misses the highest-yield modifiable drivers in the endurance-athlete case and undertreats the fructose-load contribution.

Failing to shift the protein-source composition toward the low-purine dairy and whey isolate options without dropping total protein below the athletic target. The intervention is not "eat less protein"; it is "shift the protein-source mix while preserving the protein target for training adaptation and recovery."

Missing the fructose audit on the sports-drink and gel exposure. The race-week case running 100 to 200 g/day of added fructose is a first-order driver that generic nutrition-counseling scripts do not surface.

Missing the hydration and sweat-loss integration. The chronically underhydrated endurance athlete presents with a concentrated serum uric acid on the draw morning and a reduced renal uric acid clearance across the training week; the fluid-balance intervention is a first-order lever.

Missing the metabolic-syndrome differential in the lean-appearing endurance athlete. Insulin-resistance-driven hyperuricemia is not eliminated by a normal BMI or a low body-fat percentage. Run the parallel workup where the fasting insulin, triglyceride-to-HDL ratio, or family history warrants.

Endorsing tart-cherry juice or "uric-acid-lowering" supplements as the primary intervention without addressing the dietary and lifestyle drivers. Tart cherry has modest observational support in the gout-attack-prevention context but is not a first-order intervention for the asymptomatic hyperuricemia case; the sports-drink fructose exposure of the sweetened tart-cherry beverage formulations can offset the effect.

Where this lands in the SOAP

Subjective section format:

Uric Acid Workup (panel reviewed YYYY-MM-DD):

• Serum uric acid: [X mg/dL, x sedentary reference ULN]
• Draw timing relative to last hard session: [X hours]
• Hydration status on draw morning: [narrative]
• Redraw plan (off-training, rehydrated): [scheduled date]

Renal handling and adjacent labs:

• Serum creatinine: [X mg/dL]
• eGFR (with muscular-contribution audit): [narrative]
• BUN: [X mg/dL]
• Spot or 24-hour urinary uric acid: [if ordered]
• Fasting glucose and insulin, HOMA-IR: [if indicated]
• Lipid panel, triglyceride-to-HDL ratio: [if indicated]

Purine-load audit:

• Daily protein intake (g/kg, total g): [values]
• Protein source composition (organ meats, small oily fish, shellfish, muscle meats, dairy, whey isolate, egg white): [narrative with weekly frequency]
• Weekly frequency of high-purine sources: [count]

Fructose-load audit:

• Daily sports-drink and gel exposure (product name, volume, carbohydrate composition): [narrative]
• Race-week and race-day carbohydrate load (grams fructose, grams total carbohydrate): [narrative]
• Sweetened-beverage intake outside training: [narrative]
• Whole-fruit and dried-fruit intake: [narrative]

Alcohol history:

• Servings per week (beer specifically flagged as a driver): [narrative]

Medication and supplement inventory:

• Diuretics, low-dose aspirin, cyclosporine, pyrazinamide: [list]
• Niacin, nicotinic acid, vitamin B3 in high doses: [list]
• Other supplements potentially elevating uric acid: [list]

Hydration and sweat-loss overlay:

• Estimated sweat rate (measured or estimated): [L/hour]
• Daily fluid intake vs training-load-adjusted target: [narrative]

Symptom and history:

• Joint symptoms (mono-articular, first MTP, midfoot, ankle, knee): [narrative]
• History of gout attack or tophi: [narrative]
• History of renal uric acid stones: [narrative]
• Family history of gout, renal stone disease, metabolic syndrome: [narrative]

Quadrant: [1-4 from clinical matrix]

Clinical impression: [statement integrating draw-timing overlay, purine-load audit, fructose-load audit, hydration status, renal-handling read, and metabolic-syndrome overlay]

Action: [redraw scheduling / protein-source composition shift / fructose exposure reduction / hydration intervention / medical referral trigger]

Follow-up: [recheck date, plan, escalation triggers]

Assessment integrates the five-dimension read and assigns the case to a quadrant. Plan documents the differential, the dietary and hydration intervention, the medical-coordination communications, and the recheck cadence. See [SOAP notes for sports dietitians](/blog/soap-notes-for-sports-dietitians) for the broader documentation framework.

The dietetic intervention in the responder case

The Quadrant 1 and Quadrant 2 cases respond to four intervention levers.

Protein-source composition shift. Hold total protein at the athletic target (1.6 to 2.2 g/kg for the endurance and strength athlete pattern), and shift the source composition toward the low-purine dairy, whey isolate, casein, and egg-white options for the majority of the daily protein. Retain moderate-purine muscle-meat sources at a reduced weekly frequency; eliminate or heavily reduce the high-purine organ-meat, small-oily-fish, and high-purine-shellfish sources during the intervention window.

Fructose exposure reduction. Move the daily sweetened-beverage exposure toward water, unsweetened tea, and low-fructose electrolyte formulations; retain the sports-drink and gel use in the training and race window where the carbohydrate demand justifies it, but audit the formulations for glucose-fructose ratio and total fructose exposure; move the daily whole-fruit intake toward the lower-fructose options (berries, kiwi, citrus) where the picture warrants.

Hydration intervention against the training-load-adjusted fluid target. Calculate the sweat-rate-derived daily fluid target across the training week, and support the athlete in meeting the target consistently. The intervention is protective on both the acute draw-morning concentration and the chronic renal uric acid clearance.

Alcohol reduction where the pattern warrants. Beer specifically drives hyperuricemia through both a purine load and a lactate-driven excretion inhibition; the intervention in the beer-dominant alcohol pattern is meaningful.

Where platform tooling helps

The bottleneck in the uric acid workup at scale is the multi-system integration — the serum value read against the draw timing and hydration status, the protein-source composition audit across the weekly food log, the fructose-through-sports-drink and gel exposure audit across the daily and race-week windows, the renal-handling overlay integrated with the [kidney function workup](/blog/kidney-function-workup-in-athletes), the [insulin resistance](/blog/insulin-resistance-workup-in-athletes) parallel read, the medication and supplement inventory for uric-acid-elevating agents, and the recheck cadence across serial redraws. The intake that runs the integration by hand drops it on busy weeks; the ultramarathon runner's case gets managed as a rheumatology referral when the actual differential runs through a race-week fructose exposure and a draw-timing artifact.

The leverage is a uric acid workup module that ingests the serum value, prompts for the draw-timing and hydration-status capture, runs the protein-source composition audit against the food log to surface the weekly organ-meat and small-oily-fish frequency, audits the sports-drink and gel exposure for glucose-fructose composition, integrates with the kidney function and insulin resistance workups where the panel warrants, prompts for the medication and supplement audit, surfaces the four-quadrant decision matrix, pre-populates the SOAP documentation, tracks the recheck cadence, and manages the medical-coordination communications where escalation is warranted. The RD's job is the clinical judgment and the conversation with the athlete, not the spreadsheet.

The chart trail is defensible — every interpretation tied to the integration context that justified it, every referral documented with the pattern that drove it, every dietary and lifestyle intervention paired with the differential reasoning behind it.

The bottom line

Serum uric acid elevated on a primary-care panel in an endurance or high-protein-diet athlete is not automatically a gout-differential referral. The sedentary reference range does not integrate the draw-timing overlay from a recent hard session, the sweat-concentration artifact in an incompletely rehydrated athlete, the purine-load from the protein-source composition, or the fructose-load through sports drinks and gels in the race-week and training windows. The primary-care read that flags the value and reflexively generates the rheumatology referral misclassifies most of these cases.

The workup that catches the real cases reads uric acid against the draw timing and hydration status, audits the protein-source composition to quantify the modifiable purine load, audits the sports-drink and gel exposure to quantify the modifiable fructose load, integrates the renal-handling read where the picture warrants, runs the parallel insulin-resistance workup where the metabolic overlay warrants, and assigns the case to a four-quadrant matrix that drives the intervention pathway. The Quadrant 1 draw-timing-and-fructose overlay case gets the redraw off training and off the exposure. The Quadrant 2 dietary-driver-dominant case gets the protein-source shift, the fructose reduction, the hydration intervention, and the alcohol audit. The Quadrant 3 clinical-gout or markedly-elevated case gets the medical coordination. The Quadrant 4 ambiguous case gets the extended follow-on.

The 34-year-old ultramarathon runner with the 8.9 mg/dL uric acid drawn 48 hours after her longest training run, on a high-protein diet with a race-week fructose load through sports drinks, is not the rheumatology-referral case the primary-care panel produced. She is a Quadrant 1 or Quadrant 2 case where the redraw off training and off the fructose exposure, the protein-source composition audit, and the hydration intervention are the first-order actions, and where the workup that runs the integration catches what the reflexive-referral read misses.

[Calsanova's Dietitian plan](/signup?role=dietitian) ships a uric acid workup module with draw-timing and hydration overlay prompts, structured protein-source composition audit against the food log, fructose-through-sports-drink and gel exposure audit, kidney function and insulin resistance workup integration, medication and supplement audit surfaces, four-quadrant decision-matrix surfacing, and pre-populated SOAP documentation with medical-coordination communications built in. The clinical judgment stays with the RD; the integration stays off the spreadsheet.