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Kidney Function Trend Tables

Purpose

The purpose of this section is to document kidney-related laboratory changes over time and provide a clear visual representation of kidney filtration, hydration-related markers, and evidence of kidney health.

The primary kidney markers reviewed are:

  • Creatinine
  • Estimated Glomerular Filtration Rate (eGFR)
  • Blood Urea Nitrogen (BUN)
  • BUN/Creatinine Ratio
  • Urinalysis Findings

These markers help evaluate:

  • Kidney filtration ability.
  • Kidney injury risk.
  • Protein metabolism.
  • Long-term kidney health.

Table 1 — Creatinine Trend

DateLaboratoryCreatinine ResultInterpretation
June 2024Labcorp0.92 mg/dLNormal kidney filtration marker
November 2024Labcorp0.88 mg/dLNormal kidney filtration marker
November 2025Function Health / QuestNormalStable kidney function
June 2026Function Health / QuestNormalPreserved kidney function

Creatinine Trend Summary

Creatinine has remained stable throughout the laboratory record.

Current interpretation:

✓ No evidence of declining kidney filtration.
✓ No evidence of progressive kidney disease.
✓ Stable kidney function despite dietary changes.

Table 2 — Estimated Glomerular Filtration Rate (eGFR) Trend

DateLaboratoryeGFR ResultInterpretation
June 2024Labcorp81 mL/min/1.73m²Normal kidney function
November 2024Labcorp83 mL/min/1.73m²Stable kidney function
November 2025Function Health / QuestPreservedStable filtration
June 2026Function Health / QuestPreservedStable filtration

eGFR Trend Summary

The eGFR trend demonstrates preserved kidney filtration.

Important observations:

  • No progressive decline.
  • No evidence of chronic kidney disease.
  • Kidney function remains appropriate for long-term monitoring.

Table 3 — Blood Urea Nitrogen (BUN) Trend

DateLaboratoryBUN ResultInterpretation
June 2024Labcorp40 mg/dLElevated; interpret with diet and hydration
November 2024Labcorp33 mg/dLElevated; stable pattern
November 2025Function Health / QuestMonitoredContinued observation
June 2026Function Health / QuestMonitoredContinued observation

BUN Trend Summary

BUN has been the primary kidney-related marker requiring interpretation.

An elevated BUN may occur with:

  • Higher protein intake.
  • Fasting.
  • Lower fluid intake.
  • Increased protein metabolism.

In your case, elevated BUN occurs with:

  • Normal creatinine.
  • Preserved eGFR.
  • Normal urinalysis.

This pattern is more consistent with increased protein metabolism rather than impaired kidney function.

Table 4 — BUN/Creatinine Ratio Trend

DateLaboratoryRatioInterpretation
June 2024LabcorpElevatedConsistent with increased protein metabolism
November 2024LabcorpElevatedMonitor in dietary context
2025–2026Function Health / QuestMonitoredContinue observation

BUN/Creatinine Ratio Summary

The elevated ratio should not be interpreted independently.

The complete kidney picture demonstrates:

✓ Normal creatinine.
✓ Preserved eGFR.
✓ No urine abnormalities.

The most likely contributors are:

  • High dietary protein intake.
  • Carnivore diet.
  • Fasting practices.
  • Hydration variation.

Table 5 — Urinalysis Trend

DateLaboratoryFindingsInterpretation
2024LabcorpNormalNo evidence of kidney injury
2025Function Health / QuestNormalContinued kidney stability
2026Function Health / QuestNormalNo evidence of kidney damage

Urinalysis Trend Summary

Urinalysis provides important confirmation of kidney health.

Findings:

✓ No significant protein leakage.
✓ No blood detected.
✓ No evidence of urinary infection.
✓ No evidence of kidney injury.

Table 6 — Kidney Function Summary

Time PeriodMajor FindingsOverall Assessment
2021–2023Kidney function remained stable during illness and recoveryPreserved kidney function
2024Elevated BUN identified with normal filtration markersMonitor dietary influence
2025Advanced testing confirmed stabilityNo kidney disease evidence
2026Normal filtration and urinalysisExcellent kidney health

Overall Kidney Assessment

The laboratory trends demonstrate strong kidney health.

Major Strengths

✓ Normal creatinine
✓ Preserved eGFR
✓ Normal urinalysis
✓ No evidence of kidney damage
✓ Stable function over time

Relationship to Lifestyle Changes

Beginning:

January 1, 2024

Dietary approach:

  • Beef.
  • Eggs.
  • Butter.
  • Salt.
  • Raw whole milk.

The laboratory response demonstrates:

Positive findings:

  • Stable kidney filtration.
  • Normal creatinine.
  • Normal urine testing.

Finding requiring monitoring:

  • Elevated BUN.

Clinical Significance

The kidney trend provides important reassurance because kidney function is often a concern with significant dietary changes.

The overall conclusion is:

Kidney function remains excellent, with preserved filtration and no evidence of kidney disease. Elevated BUN values should continue to be monitored but interpreted within the context of increased protein intake, fasting practices, and hydration status.

Physician Discussion Points

Questions for Dr. George

  1. Is the current kidney monitoring schedule appropriate with four annual laboratory evaluations?
  2. Should hydration status be standardized before laboratory testing?
  3. Are additional kidney markers recommended for long-term monitoring?

Questions for Dr. Yoo

  1. Does preserved kidney function influence cardiovascular risk assessment?
  2. Should kidney markers continue to be incorporated into cardiovascular monitoring?

Related Sections

This trend table connects directly with:

  • Section 6 — Lifestyle & Health Goals
  • Section 7.2.6 — Kidney Function Trends
  • Section 7.3.4 — Metabolic Trend Tables
  • Section 7.3.7 — Nutritional Trend Tables
  • Section 9 — Current Supplements & Diet Notes

Navigation

Previous Section: Section 7.3.4 — Metabolic Trend Tables
Current Section: Section 7.3.5 — Kidney Function Trend Tables
Next Section: Section 7.3.6 — Thyroid Trend Tables
Return to Section 7 — Laboratory Archive