Testing & Monitoring

Function Health provides unprecedented value by offering over 100 biomarkers—including advanced cardiovascular and hormonal markers—for a flat annual fee. The use of venous draws at Quest Diagnostics ensures clinical-grade accuracy that finger-prick tests cannot match.

InsideTracker is the industry leader for actionable data, using a peer-reviewed algorithm to provide personalized nutrition and lifestyle recommendations based on 48 key biomarkers. Their platform is specifically designed for athletes and high-performers seeking optimization rather than just 'normal' ranges.

Life Extension offers the most direct and cost-effective way to access high-quality LabCorp testing without a doctor's visit. It is perfect for the self-educated consumer who wants standard clinical panels (CBC, Chemistry, Hormones) at wholesale prices.

For those who cannot or will not visit a lab in person, LetsGetChecked provides the most reliable at-home finger-prick testing. Their kits are highly standardized, and their physician-led support for abnormal results provides a safety net others lack.

The Apple Watch Series 9 remains the gold standard for consumer-grade clinical validation, featuring FDA-cleared ECG and AFib detection. Its heart rate sensor consistently outperforms competitors in independent validation studies against EKG gold standards.

Oura leads the market in sleep staging accuracy and temperature-based biomarker tracking. Its form factor allows for more consistent skin contact than wrist-based wearables, particularly for nocturnal HRV and respiratory rate.

The Dexcom G7 is the most accurate wearable for real-time metabolic testing. It moves beyond proxy metrics (like heart rate) to measure actual blood glucose levels, providing immediate feedback on nutrition and metabolic health.

99.9% accuracy for resting heart rate. Best sleep tracking among wearables. Ring form factor is more comfortable than wrist bands for sleep.

Only device on US Blood Pressure Validated Device Listing. 79% of upper-arm monitors sold online are NOT validated for accuracy.

Thorne sets the standard for home testing by utilizing shotgun metagenomic sequencing rather than the cheaper 16S rRNA sequencing used by most competitors. This provides a high-resolution view of the entire gut microbiome, including bacteria, viruses, and fungi, paired with a proprietary 'Wipe' collection method that is significantly more user-friendly.

LetsGetChecked provides a true end-to-end clinical experience, including physician review and a nursing consultation if results are abnormal. Their labs are CLIA-certified and CAP-accredited, ensuring that the home-collected capillary blood sample meets the same standards as a hospital draw.

Function Health offers the most comprehensive biomarker testing available to consumers, covering 100+ markers including ApoB, Lp(a), and advanced hormones for a flat annual fee. While it requires a visit to a Quest lab (not a home finger-prick), the 'home device' aspect is the digital platform and kit management that makes high-level diagnostics accessible.

Everlywell is the most accessible home-testing brand with excellent UI and clear, actionable reports. Their Metabolism Test measures TSH, Cortisol, and Testosterone (in women) or DHEA, providing a solid snapshot of hormonal health that impacts weight and energy.