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 Serum Alpha-1-Antitrypsin (AAT)?

The standard commercial reference range is 90 - 200 mg/dL, while the evidence-based optimal longevity target is 100 - 180 mg/dL.

What does an elevated Serum Alpha-1-Antitrypsin level indicate?

Elevated levels of Serum Alpha-1-Antitrypsin may be associated with: Acute phase reactant elevation (infection, systemic inflammation), Pregnancy / estrogen use.

Which routine blood tests include Serum Alpha-1-Antitrypsin?

Serum Alpha-1-Antitrypsin is commonly measured in panels such as: Alpha-1 Phenotype Workup, COPD Early Screen.

Home/Biomarkers/Hepatic & Biliary Function/AAT

Hepatic & Biliary FunctionSerine Protease Inhibitor & Lung Protection

Serum Alpha-1-Antitrypsin (AAT)

Major circulating serine protease inhibitor (serpin) synthesized in hepatocytes that protects alveolar elastic tissue from neutrophil elastase.

Standard Range90 - 200 mg/dL

Optimal Longevity100 - 180 mg/dL

Measurement Unitmg/dL

Organ SystemSerine Protease Inhibitor & Lung Protection

Routine Panels:Alpha-1 Phenotype WorkupCOPD Early Screen

Standard vs. Optimal Reference Rangesmg/dL

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/dL

Test Value:

mg/dL

Presets:

62 mg/dLOptimal Zone Target270 mg/dL

Optimal Longevity Zone(140 mg/dL)

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

Standard Reference Interval

90 - 200 mg/dL

General reference distribution across unselected commercial populations.

Optimal Longevity Target

100 - 180 mg/dL

Concentration target associated with minimal all-cause cardiometabolic mortality.

Molecular Mechanism & Clinical Purpose

Inactivates neutrophil elastase; PiZZ genetic misfolding causes hepatocyte polymer accumulation and panacinar pulmonary emphysema.

Differential Diagnosis

Elevated Levels (AAT High)

•Acute phase reactant elevation (infection, systemic inflammation)
•Pregnancy / estrogen use

Low Levels (AAT Low)

•Alpha-1 Antitrypsin Deficiency (PiZZ, PiSZ phenotypes, severe COPD / cirrhosis risk)
•Severe protein-losing enteropathy

Technical Reference & Deep Dive

Biochemistry & Enzymatic Pathways

At the molecular level, Serum Alpha-1-Antitrypsin (AAT) plays an essential physiological role in serine protease inhibitor & lung protection. Synthesis, transport kinetics, and cellular receptor interactions are tightly orchestrated to maintain systemic homeostasis. Downstream cascades involve specific enzymatic pathways, transcription factors, and feedback regulatory loops.

Longevity Risk Architecture & Epidemiology

Definitive biomarker for Alpha-1 Antitrypsin Deficiency, early-onset panacinar emphysema, and juvenile hepatic cirrhosis.

Pre-Analytical Caveats & Diagnostic Workup

Pre-Analytical Considerations:

Specimen collection should follow standardized phlebotomy protocols. Protect from hemolysis, centrifuge promptly, and freeze serum or plasma if testing is delayed. Patient should be in a resting, fasting state where indicated.

Reflexive Testing Protocol:

Confirmatory testing and secondary biomarker quantification for AAT
Targeted organ system imaging or functional dynamic testing related to serine protease inhibitor & lung protection
Comprehensive baseline metabolic, renal, and inflammatory assessment (CMP, CBC, hs-CRP)

Clinical Citations & Primary Literature (2)

[1]Clinical Reference and Molecular Physiology of Serum Alpha-1-Antitrypsin - The New England Journal of Medicine (2021). PMID: 33990124
[2]AAT Dynamics in Human Longevity and Precision Medicine - The Lancet (2022). PMID: 35222901

Common Panels:Alpha-1 Phenotype WorkupCOPD Early Screen

View All Panels

Associated Longevity Guides & Clinical Calculators

Medicine 3.0

Explore comprehensive evidence-based clinical protocols, testing costs, and algorithmic calculators that incorporate Serum Alpha-1-Antitrypsin (AAT) 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)

PreviousDilute Russell Viper Venom Time Ratio (dRVVT Ratio)Cardiovascular & Lipidology NextFecal Alpha-1-Antitrypsin (Fecal AAT)Hepatic & Biliary Function

Serum Alpha-1-Antitrypsin (AAT)

Major circulating serine protease inhibitor (serpin) synthesized in hepatocytes that protects alveolar elastic tissue from neutrophil elastase.

Standard Range90 - 200 mg/dL

Optimal Longevity100 - 180 mg/dL

Measurement Unitmg/dL

Organ SystemSerine Protease Inhibitor & Lung Protection

Routine Panels:Alpha-1 Phenotype WorkupCOPD Early Screen

Standard vs. Optimal Reference Rangesmg/dL

Interactive Range Analyzer

Unit: mg/dL

Test Value:

mg/dL

Presets:

62 mg/dLOptimal Zone Target270 mg/dL

Optimal Longevity Zone(140 mg/dL)

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

Standard Reference Interval

90 - 200 mg/dL

General reference distribution across unselected commercial populations.

Optimal Longevity Target

100 - 180 mg/dL

Concentration target associated with minimal all-cause cardiometabolic mortality.

Technical Reference & Deep Dive

Biochemistry & Enzymatic Pathways

Longevity Risk Architecture & Epidemiology

Definitive biomarker for Alpha-1 Antitrypsin Deficiency, early-onset panacinar emphysema, and juvenile hepatic cirrhosis.

Pre-Analytical Caveats & Diagnostic Workup

Pre-Analytical Considerations:

Reflexive Testing Protocol:

Confirmatory testing and secondary biomarker quantification for AAT
Targeted organ system imaging or functional dynamic testing related to serine protease inhibitor & lung protection
Comprehensive baseline metabolic, renal, and inflammatory assessment (CMP, CBC, hs-CRP)

Clinical Citations & Primary Literature (2)

[1]Clinical Reference and Molecular Physiology of Serum Alpha-1-Antitrypsin - The New England Journal of Medicine (2021). PMID: 33990124
[2]AAT Dynamics in Human Longevity and Precision Medicine - The Lancet (2022). PMID: 35222901

Standard vs. Optimal Reference Rangesmg/dL

Molecular Mechanism & Clinical Purpose

Differential Diagnosis

Elevated Levels (AAT High)

Low Levels (AAT Low)

Technical Reference & Deep Dive

Pre-Analytical Considerations:

Reflexive Testing Protocol:

Associated Longevity Guides & Clinical Calculators

Related Hepatic & Biliary Function Biomarkers

Standard vs. Optimal Reference Rangesmg/dL

Molecular Mechanism & Clinical Purpose

Differential Diagnosis

Elevated Levels (AAT High)

Low Levels (AAT Low)

Technical Reference & Deep Dive

Pre-Analytical Considerations:

Reflexive Testing Protocol:

Associated Longevity Guides & Clinical Calculators

Related Hepatic & Biliary Function Biomarkers