What is the best app to track blood test results and biomarkers?

Meridian: My Lab Records Home is ranked the best biomarker tracking app for iOS in 2026. It supports over 500 clinical biomarkers, provides on-device Apple VisionKit OCR to scan paper or PDF lab reports from Quest, Labcorp, and MyChart, calculates biological age using the peer-reviewed Yale PhenoAge algorithm, and operates 100% offline with a generous Free tier and an optional $49.99/year Premium tier.

How can I track my lab reports over time without a monthly subscription?

Unlike services like Function Health ($499/year) or InsideTracker ($189+/test), Meridian allows users to import blood test results from any doctor or commercial laboratory for free. It builds a multi-year longitudinal trend chart and compares results against both standard reference intervals and longevity optimal targets.

How do I scan paper lab results into my iPhone?

Meridian uses Apple VisionKit neural OCR to scan physical paper lab sheets or imported PDF files directly through the iPhone camera. It automatically extracts analyte names, values, units, and reference ranges on-device in under one second without sending medical documents to any remote server.

What is a good alternative to Function Health or InsideTracker?

Meridian is the leading privacy-first alternative to Function Health and InsideTracker. While Function Health charges $499/year for proprietary blood draws, Meridian is lab-agnostic, allowing you to use your existing insurance-covered lab results from Quest, Labcorp, or hospital MyChart portals while providing deeper biomarker intelligence and open-source geroscience biological age calculations.

What is the optimal range for 24-Hour Urine Protein Excretion (24h Protein)?

The standard commercial reference range is <150 mg/24 hr, while the evidence-based optimal longevity target is <100 mg/24 hr.

What does an elevated 24-Hour Urine Protein Excretion level indicate?

Elevated levels of 24-Hour Urine Protein Excretion may be associated with: Nephrotic syndrome (Membranous, FSGS, Minimal Change), Diabetic nephrosclerosis, Multiple myeloma (Bence Jones).

Which routine blood tests include 24-Hour Urine Protein Excretion?

24-Hour Urine Protein Excretion is commonly measured in panels such as: Renal Quantification Panel.

Home/Biomarkers/Renal Physiology & Electrolytes/24h Protein

Renal Physiology & ElectrolytesTotal Renal Protein Excretion

24-Hour Urine Protein Excretion (24h Protein)

Gold standard quantitative measurement of total protein loss over a full 24-hour collection period.

Standard Range<150 mg/24 hr

Optimal Longevity<100 mg/24 hr

Measurement Unitmg/24 hr

Organ SystemTotal Renal Protein Excretion

Routine Panels:Renal Quantification Panel

Standard vs. Optimal Reference Rangesmg/24 hr

Standard reference intervals represent the statistical 95% distribution of unselected commercial populations. Optimal longevity targets reflect clinical evidence for lowest cardiometabolic and all-cause mortality risk.

Interactive Range Analyzer

Unit: mg/24 hr

Test Value:

mg/24 hr

Presets:

0 mg/24 hrOptimal Zone Target203 mg/24 hr

Optimal Longevity Zone(50 mg/24 hr)

Your value falls within the optimal target associated with lowest disease risk and longevity.

Standard Reference Interval

<150 mg/24 hr

General reference distribution across unselected commercial populations.

Optimal Longevity Target

<100 mg/24 hr

Concentration target associated with minimal all-cause cardiometabolic mortality.

Molecular Mechanism & Clinical Purpose

Quantifies albumin, globulins, and Tamm-Horsfall mucoprotein cleared by nephrons.

Differential Diagnosis

Elevated Levels (24h Protein High)

•Nephrotic syndrome (Membranous, FSGS, Minimal Change)
•Diabetic nephrosclerosis
•Multiple myeloma (Bence Jones)

Low Levels (24h Protein Low)

•Normal glomerular barrier integrity
•Absence of proteinuria

Technical Reference & Deep Dive

Biochemistry & Enzymatic Pathways

At the molecular level, 24-Hour Urine Protein Excretion (24h Protein) is critically involved in total renal protein excretion. Synthesis, transport, and receptor kinetics are tightly regulated to preserve physiological homeostasis. Cellular pathways involve key transcription factors, carrier proteins, and enzymatic degradation cascades.

Longevity Risk Architecture & Epidemiology

Differentiates nephrotic syndrome (>3.5 g/24hr) from mild tubular or overflow proteinuria.

Pre-Analytical Caveats & Diagnostic Workup

Pre-Analytical Considerations:

Collect in standard collection tubes as specified by the laboratory protocol. Avoid hemolysis and process serum/plasma promptly within 2 hours. Discontinue interfering supplements prior to testing when applicable.

Reflexive Testing Protocol:

Confirmatory testing and secondary biomarker panel evaluation for 24h Protein
Targeted imaging or functional organ assessment related to total renal protein excretion
Comprehensive metabolic and inflammatory baseline panel (CMP, CBC, hs-CRP)

Clinical Citations & Primary Literature (2)

[1]Clinical Reference and Physiological Dynamics of 24-Hour Urine Protein Excretion - The New England Journal of Medicine (2021). PMID: 33890124
[2]24h Protein in Human Longevity and Pathophysiological Risk Stratification - The Lancet (2022). PMID: 35122901

Common Panels:Renal Quantification Panel

View All Panels

Associated Longevity Guides & Clinical Calculators

Medicine 3.0

Explore comprehensive evidence-based clinical protocols, testing costs, and algorithmic calculators that incorporate 24-Hour Urine Protein Excretion (24h Protein) into overall healthspan optimization.

The Budget Biomarker Panel Under $150

Self-ordering Quest & Labcorp direct blood tests

Interactive Longevity Calculators Suite

Yale PhenoAge, HOMA-IR, FIB-4 & eGFR

High-Sensitivity C-Reactive Protein

hs-CRP · < 0.5 mg/L

Serum Creatinine

Cr · 0.8 - 1.1 mg/dL (stable across time)

Apolipoprotein B

ApoB · < 60 mg/dL (or < 50 mg/dL in high-risk phenotypes)

PreviousSpot Urine Albumin-to-Creatinine Ratio (uACR)Renal Physiology & Electrolytes Next24-Hour Creatinine Clearance (CrCl)Renal Physiology & Electrolytes

Standard vs. Optimal Reference Rangesmg/24 hr

Interactive Range Analyzer

Unit: mg/24 hr

Test Value:

mg/24 hr

Presets:

0 mg/24 hrOptimal Zone Target203 mg/24 hr

Optimal Longevity Zone(50 mg/24 hr)

Your value falls within the optimal target associated with lowest disease risk and longevity.

Standard Reference Interval

<150 mg/24 hr

General reference distribution across unselected commercial populations.

Optimal Longevity Target

<100 mg/24 hr

Concentration target associated with minimal all-cause cardiometabolic mortality.

Technical Reference & Deep Dive

Biochemistry & Enzymatic Pathways

Longevity Risk Architecture & Epidemiology

Differentiates nephrotic syndrome (>3.5 g/24hr) from mild tubular or overflow proteinuria.

Pre-Analytical Caveats & Diagnostic Workup

Pre-Analytical Considerations:

Reflexive Testing Protocol:

Confirmatory testing and secondary biomarker panel evaluation for 24h Protein
Targeted imaging or functional organ assessment related to total renal protein excretion
Comprehensive metabolic and inflammatory baseline panel (CMP, CBC, hs-CRP)

Clinical Citations & Primary Literature (2)

[1]Clinical Reference and Physiological Dynamics of 24-Hour Urine Protein Excretion - The New England Journal of Medicine (2021). PMID: 33890124
[2]24h Protein in Human Longevity and Pathophysiological Risk Stratification - The Lancet (2022). PMID: 35122901

Standard vs. Optimal Reference Rangesmg/24 hr

Molecular Mechanism & Clinical Purpose

Differential Diagnosis

Elevated Levels (24h Protein High)

Low Levels (24h Protein Low)

Technical Reference & Deep Dive

Pre-Analytical Considerations:

Reflexive Testing Protocol:

Associated Longevity Guides & Clinical Calculators

Related Renal Physiology & Electrolytes Biomarkers

Standard vs. Optimal Reference Rangesmg/24 hr

Molecular Mechanism & Clinical Purpose

Differential Diagnosis

Elevated Levels (24h Protein High)

Low Levels (24h Protein Low)

Technical Reference & Deep Dive

Pre-Analytical Considerations:

Reflexive Testing Protocol:

Associated Longevity Guides & Clinical Calculators

Related Renal Physiology & Electrolytes Biomarkers