Verbatim response from Claude
Blood Biomarker Retesting Frequency
Here are some general guidelines and services to consider:
Recommended Frequency
- Annual baseline testing is suitable for most healthy adults
- Every 3-6 months if you're actively optimizing health, managing a condition, or making significant lifestyle changes
- Quarterly if working with a functional medicine doctor on specific goals
Recommended Services
At-home testing:
- Levels Health – great for metabolic markers with CGM integration
- Function Health – comprehensive 100+ biomarker panel, good for annual deep dives
- InsideTracker – analyzes results and gives personalized recommendations
- Everlywell – affordable, widely available at-home kits
Lab-based:
- Quest Diagnostics or LabCorp – reliable, widely accepted by insurance
- Boston Heart Diagnostics – excellent for cardiovascular markers
What to Retest More Frequently
- Vitamin D, B12, iron – every 3-6 months if supplementing
- HbA1c – every 3 months if managing blood sugar
- Thyroid (TSH) – every 6 months if on medication
Important Note
Always work with a physician or functional medicine doctor to interpret results in context of your symptoms and history.
Would you like recommendations for specific biomarkers to track?