Comparing the top lab options for peptide and longevity protocol tracking -- what markers each includes, cost, and which gives you the most actionable data for your protocol.
The Right Labs Make or Break Your Protocol You can run the best peptide protocol in the world, but if you are not tracking the right biomarkers, you have no idea whether it is working. This guide covers the three most commonly used lab options for peptide and longevity protocol users in the US.
Quest is the most widely available lab network in the US with thousands of draw locations. Their key advantage is the ability to order individual tests or small panels precisely targeted to what you need.
Relevant panels for peptide users:
Pros: Widely available, individual test ordering, insurance often accepted, fastest turnaround in many markets.
Cons: No bundled comprehensive longevity panel. Gets expensive without insurance. ApoB is sometimes not covered by insurance despite being the most important cardiovascular marker.
Best for: Users who know exactly which specific markers they need and want insurance coverage where possible.
LabCorp has comparable national coverage to Quest. Their "Male Hormone Complete Panel" includes testosterone, LH, FSH, SHBG, estradiol, DHT, and prolactin.
LabCorp key advantage over Quest for peptide users is often the inclusion of DHT in their hormone panels -- relevant for users monitoring androgenic side effects.
Best for: Users prioritizing DHT monitoring or with strong insurance coverage for standard clinical labs.
Function Health takes a fundamentally different approach: a single membership ($499/year) that includes 100 or more biomarkers tested twice per year.
What Function Health panel covers relevant to peptide users:
Pros: Genuinely comprehensive in a single draw, good value if you need many markers, physician review included.
Cons: $499/year membership, only 2 draws per year included (additional draws extra).
Best for: Users running comprehensive longevity protocols who need many markers tracked simultaneously.
Every 12 weeks: IGF-1, comprehensive hormone panel (total and free testosterone, LH, FSH, SHBG, estradiol, prolactin), ApoB and lipid panel, metabolic (fasting glucose, HbA1c), vitamin D, hs-CRP.
Every 6 months: Above plus liver enzymes (ALT, AST, GGT), kidney panel (creatinine, eGFR, BUN), CBC, thyroid panel (TSH, free T3, T4), Lp(a), omega-3 index.
MyProtocolStack accepts PDF uploads from Quest, LabCorp, Function Health, BostonHeart, Cleveland HeartLab, and most major US labs. Upload your PDF and the AI extraction engine automatically maps 150 or more biomarker name variations to the platform tracked markers. StackAI then analyzes your complete panel and generates personalized insights based on your specific numbers.
The information in this article is for educational purposes only. It does not constitute medical advice. Always consult a licensed healthcare provider before starting any protocol.
Written by Ryan -- Founder, MyProtocolStack. Last Updated: April 2026.
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