The Best Blood Test Services for Longevity in 2026: A Complete Comparison
Published: March 2026 · Read time: 16 minutes · Category: Data Deep Dive
Last updated: March 6, 2026
Disclosure: This article contains affiliate links for some products. I have not been paid by any blood testing company to write this. I currently get my bloodwork done through my doctor's annual physical — this article is partly my own research as I decide which service to add for quarterly testing. Full disclosure →
The Bottom Line
Your annual physical checks maybe 15-20 blood markers. That's enough to catch emergencies — it's not enough to optimize. The gap between "your numbers are fine" and "your numbers are optimal" is where longevity lives.
I track 41 biomarkers with zero out of range. But I've been doing this through my doctor's office, which means I'm at the mercy of whatever my insurance covers, whatever my doctor thinks is necessary, and whatever cadence my insurer approves (usually once a year). That's not good enough for someone trying to drop their biological age 9.5 years.
So I went deep into every major blood testing service available in 2026 to figure out which one makes the most sense for someone who wants real data, optimal ranges (not just "normal"), and the ability to test quarterly without fighting insurance. Here's what I found.
Why Your Annual Physical Isn't Enough
Your doctor's standard blood panel typically covers a complete blood count (CBC), basic metabolic panel, lipid panel (total cholesterol, LDL, HDL, triglycerides), and maybe fasting glucose. That's roughly 15-20 markers.
What's missing is significant: inflammatory markers like hsCRP and homocysteine, hormonal panels (free and total testosterone, cortisol, DHEA-S, thyroid beyond just TSH), nutrient levels (vitamin D, B12, ferritin, magnesium), advanced lipid markers (ApoB, Lp(a), LDL particle size), metabolic depth (insulin, HbA1c, HOMA-IR), and organ-specific markers that catch dysfunction early.
More importantly, your doctor is comparing your results against "normal" reference ranges — which are based on the general population, not on optimal health. A fasting glucose of 99 is "normal." It's also the doorstep of prediabetes. An optimal fasting glucose for longevity is closer to 75-85.
The services below all operate on the principle that you deserve to know your actual numbers, measured against optimal ranges, with the ability to track trends over time.
The Comparison: 8 Services Ranked
1. Function Health — Best Overall for Comprehensive Testing
Price: $365/year (membership)
Biomarkers: 160+ (first test: 100+, second test: 60+)
Tests per year: 2 included
Lab partner: Quest Diagnostics
Results: 3-4 weeks, clinician-reviewed with written summary
HSA/FSA eligible: Yes
Function is the most comprehensive option on the market. For $365/year, you get two rounds of testing — the first covering 100+ biomarkers across every major organ system, the second retesting 60+ of those markers to track changes. That's cardiovascular, metabolic, hormonal, thyroid, inflammatory, autoimmune, nutrient, and heavy metal panels all in one.
The standout features are the medical advisory board (led by Dr. Mark Hyman as CMO, with physicians from Harvard, Stanford, Cleveland Clinic, and Memorial Sloan Kettering), the clinician-reviewed reports that come with actual written summaries and action items, and the add-on options including the GRAIL cancer detection test and full-body MRI.
The cost per biomarker is the best in the industry at roughly $2.30 per marker. To get the same testing through your doctor, you'd likely pay north of $15,000 out of pocket.
Who it's for: Anyone who wants the most complete picture of their health without cutting corners. If you're going to test once or twice a year and want maximum depth, this is the one.
Limitations: Not available for international users. Some states (NY, NJ) have higher pricing due to regulations. No wearable integration. Two lab visits required for the initial round (they take a lot of blood).
2. WHOOP Advanced Labs — Best for Wearable Users
Price: $199/year (1 test), $349/year (2 tests), $599/year (4 tests)
Biomarkers: 65
Lab partner: Quest Diagnostics
Results: 5-10 business days, clinician-reviewed with action plan
HSA/FSA eligible: Yes
Requires: Active WHOOP membership
WHOOP Advanced Labs is the only blood testing service that directly integrates with a wearable device. Your 65 biomarkers are cross-referenced against your 24/7 WHOOP data — sleep, recovery, HRV, strain — to show how your blood chemistry connects to your daily performance.
The 65 biomarkers cover the essentials: CBC, comprehensive metabolic panel, advanced lipids (including ApoB and Lp(a)), hormones (testosterone, cortisol, thyroid), inflammation (hsCRP, homocysteine), and key nutrients (vitamin D, B12, ferritin, iron). It's not as deep as Function's 160+ markers, but it covers the ones that matter most for performance optimization.
The real differentiator is the integration. Your results don't just sit in a PDF — they feed into your Weekly Plan and Journal with personalized coaching. If your cortisol is elevated, WHOOP connects that to your sleep and recovery trends. If your vitamin D is low, it factors into your strain recommendations.
Uploading existing bloodwork from any provider is free for all WHOOP members. So even if you use another service for the actual testing, you can still get the WHOOP integration.
Who it's for: WHOOP users who want their blood data connected to their daily biometrics. The quarterly plan ($599 for 4 tests) is ideal for someone optimizing aggressively.
Limitations: Requires an active WHOOP membership ($239-$359/year, depending on tier). Only 65 biomarkers versus Function's 160+. Not available in AZ, HI, ND, SD, or WY. Specialized panels (hormonal, metabolic, heart) are expected to launch in 2026 but aren't live yet.
3. Blueprint (Bryan Johnson) — Best for the Don't Die Ecosystem
Price: Basic Panel $149 (67 biomarkers), Advanced Panel $249 (108 biomarkers)
Lab partner: LabCorp (3,500+ locations)
Results: 1-2 weeks via email and Don't Die app
HSA/FSA eligible: Coming soon
Blueprint's blood panels are built specifically for longevity optimization. The Basic Panel covers 67 biomarkers including advanced lipid fractionation (LDL particle number, size, and pattern — not just total LDL), comprehensive metabolic panel, CBC, and key inflammatory markers. The Advanced Panel adds hormones (free and total testosterone, SHBG, cortisol), metabolic depth (insulin, HbA1c), urinalysis, and additional electrolytes and minerals.
The integration with the Don't Die app is the differentiator here. Your results feed directly into the same platform that tracks your Don't Die score, functional age, and protocol adherence. If you're in the Don't Die ecosystem (as I am, ranked #97 globally), having your blood data in the same app as your performance data creates a unified dashboard.
Blueprint also offers standalone specialty tests — including a $150 microplastics blood test and a Speed of Aging test — that no other platform offers.
Who it's for: People in the Bryan Johnson / Don't Die ecosystem who want blood data integrated with their functional age tracking. The Advanced Panel at $249 for 108 biomarkers is strong value.
Limitations: Not available in NJ, NY, RI, or HI. No subscription model — each test is a one-time purchase, so there's no built-in cadence. No clinician review included (you get raw results). Insurance not accepted.
4. Oura + Quest Diagnostics — Best for Convenience
Price: Varies by panel (Quest pricing)
Lab partner: Quest Diagnostics (direct)
Integration: Oura app links to Quest lab locator
Oura takes a different approach — rather than building their own blood testing platform, they've integrated a Quest Diagnostics lab locator directly into the Oura app. You find a Quest location near you, book your own appointment, and order whatever panels you want through Quest.
This is less of a "product" and more of a convenience feature. You're essentially using Quest directly with the bonus of easy location finding through Oura. The advantage is flexibility — you can order exactly the tests you want, at Quest's direct pricing, without being locked into a specific panel. The disadvantage is that there's no Oura-specific analysis, no integration with your ring data, and no curated longevity-focused panel.
Who it's for: Oura users who want a convenient way to find and book lab work without needing a full-service platform. Best paired with a doctor who can order specific tests.
Limitations: No proprietary analysis. No wearable data integration. No longevity-optimized panel curation. You're essentially just using Quest with a prettier interface.
5. InsideTracker — Best for Personalized Nutrition Recommendations
Price: InnerAge plan ~$249, Ultimate plan ~$589
Biomarkers: 20-48 depending on plan
Lab partner: Quest Diagnostics
Results: 5-7 business days with personalized recommendations
HSA/FSA eligible: Yes
InsideTracker has been in the direct-to-consumer blood testing space longer than most. Their differentiator is the AI-driven action plan that turns your biomarker results into specific food, supplement, and lifestyle recommendations. The InnerAge feature estimates your biological age based on your blood markers.
The Ultimate plan covers 48 biomarkers and includes biological age calculation, personalized nutrition plan, supplement recommendations, and integration with wearable data (Garmin, Fitbit, Apple Watch, and others). The platform is well-designed and the recommendations are more specific than most — they'll tell you to eat more salmon, not just "improve your omega-3 levels."
Who it's for: People who want their blood results translated into specific, actionable dietary and lifestyle changes. Good for nutrition-focused optimizers.
Limitations: Fewer biomarkers than Function or Blueprint for a higher price per marker. The Ultimate plan at $589 for 48 markers works out to about $12.30 per biomarker versus Function's $2.30. Limited hormone and autoimmune coverage compared to comprehensive panels.
6. SiPhox Health — Best Budget At-Home Option
Price: Starting around $119/test
Biomarkers: 17-20+ depending on panel
Method: At-home finger prick (no lab visit required)
Results: 1-2 weeks
SiPhox is the most accessible entry point. Their at-home finger prick test means no lab visit, no appointment, and no fasting requirement for some panels. You get a kit in the mail, prick your finger, mail it back, and get results through their app.
The panels focus on key longevity markers: lipids, metabolic health, hormones (testosterone, cortisol), vitamins (D, B12), and inflammation (hsCRP). It's not comprehensive, but it covers the markers that matter most for someone just starting to track blood data.
Who it's for: Budget-conscious beginners who want to start tracking key biomarkers without committing to a lab visit or a $300+ annual plan. Good as a supplement between more comprehensive tests.
Limitations: Finger prick can produce slightly less accurate results than venous draws for some markers. Fewer biomarkers than lab-based options. Limited hormone and organ function coverage.
7. Marek Health — Best for Hormone Optimization
Price: Base Panel ~$150, Comprehensive ~$300, Complete ~$450, Executive ~$700+
Biomarkers: 30-100+ depending on tier
Lab partner: LabCorp and Quest
Results: Varies, includes physician consultation option
Marek Health offers the widest range of tiered panels, from a basic hormone check to an executive panel that rivals Function in depth. What sets them apart is the emphasis on hormonal health — their panels include detailed testosterone (free, total, bioavailable), estradiol, prolactin, DHEA-S, and thyroid panels that go beyond TSH to include Free T3, Free T4, and thyroid antibodies.
They also offer optional physician consultations to review results, which is valuable for people who want expert interpretation, especially for hormone-related findings.
Who it's for: People specifically focused on hormonal optimization, testosterone health, or thyroid function. The tiered structure lets you start basic and go deeper as needed.
Limitations: The executive-level panels are expensive. No wearable integration. Less focus on longevity-specific markers compared to Function or Blueprint.
8. Your Doctor (Insurance-Covered Annual Physical) — Best for Free
Price: $0 (covered by most insurance)
Biomarkers: 15-20 (typically)
Results: 1-2 weeks
Includes: Physician review
Your annual physical is free and it's better than nothing. It catches the big things — severely elevated cholesterol, kidney dysfunction, diabetes, anemia. Your doctor interprets the results in context of your medical history, can order follow-up tests if something's off, and it's covered by insurance.
The problem is scope and optimization. Your doctor is checking for disease, not for peak performance. The reference ranges are "normal" (population average), not "optimal" (longevity-focused). And you typically only get tested once a year — too infrequent to track meaningful trends.
Who it's for: Everyone. Keep doing your annual physical. But supplement it with one of the services above if you want to optimize, not just screen.
Quick Comparison Table
| Service | Price/Year | Biomarkers | Tests/Year | Lab | Wearable Integration |
|---|---|---|---|---|---|
| Function Health | $365 | 160+ | 2 | Quest | None |
| WHOOP Advanced Labs | $349 | 65 | 2 | Quest | WHOOP (deep) |
| Blueprint Basic | $149/test | 67 | Buy as needed | LabCorp | Don't Die app |
| Blueprint Advanced | $249/test | 108 | Buy as needed | LabCorp | Don't Die app |
| InsideTracker Ultimate | ~$589 | 48 | 1 | Quest | Multiple wearables |
| SiPhox Health | ~$119/test | 17-20 | Buy as needed | At-home | None |
| Marek Health | $150-700+ | 30-100+ | Buy as needed | Quest/LabCorp | None |
| Doctor (insurance) | $0 | 15-20 | 1 | Varies | None |
What I'm Going to Do
I currently rely on my annual physical through insurance. That gives me a baseline, but it's not enough for quarterly optimization — especially since I'm building Evolving Age scores for myself and my clients that benefit from blood data.
My plan: keep the annual physical (free insurance baseline), add Function Health ($365/year) for the comprehensive 160+ marker panel twice a year, and use WHOOP Advanced Labs ($349/year for 2 tests) for the wearable-integrated quarterly checks. That gives me four blood draws per year, two comprehensive and two connected to my WHOOP data, for a total of about $714/year — roughly $60/month.
I'll report back with an update article comparing my actual results across both platforms once I have them.
The Markers That Matter Most for Longevity
If you can only test a handful of markers beyond your annual physical, prioritize these:
hsCRP (high-sensitivity C-Reactive Protein) — your systemic inflammation score. Below 0.5 is optimal. This is the single most underrated longevity marker.
ApoB (Apolipoprotein B) — a better predictor of cardiovascular risk than LDL cholesterol. Below 90 mg/dL is optimal; below 60 is aggressive.
Fasting Insulin — not just glucose. You can have normal glucose while insulin is working overtime to keep it there. Below 5 uIU/mL is optimal.
HbA1c — your 3-month average blood sugar. Below 5.2% is optimal for longevity.
Vitamin D — most people are deficient. 50-80 ng/mL is optimal; the average American is around 30.
Lp(a) — a genetic cardiovascular risk factor that most physicals never test. You need to know your number; there's no lifestyle intervention that changes it, but knowing it informs your entire cardiovascular strategy.
Free and Total Testosterone — declines roughly 1% per year after 30. Knowing your baseline and trajectory matters for muscle preservation, energy, and metabolic health.
Keep Reading
- How I Dropped My Biological Age 9.5 Years
- My $336/Month Longevity Stack
- 3 Sleep Rules That Moved the Needle
- WHOOP vs Oura: 88 Days Wearing Both
Want your own personalized dashboard? I'll analyze your WHOOP, Oura, or wearable data — including bloodwork integration — and build you a custom health dashboard with your Evolving Age score and specific recommendations. Learn more →