Peptide Blood Test Monitoring Matrix

Interactive reference — Before / During / After Protocol

C Critical R Recommended O Optional

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Community Protocols Disclaimer: These dosages and protocols reflect community-reported practices from biohacker forums, peptide communities, and anecdotal reports. They are not FDA-approved dosing guidelines (except where noted). Peptide purity, individual response, and health status vary widely. Always start low and titrate up. Work with a qualified healthcare provider.

Timing	What to Test	Notes	Est. Cost (DTC)
Baseline (2-4 wks before)	Full panel: CMP, CBC, lipid (incl ApoB), thyroid, hormones, IGF-1, hs-CRP, HbA1c, fasting insulin, iron panel, B12, Vit D, liver enzymes. Add CoQ10/8-OHdG for mito peptides; telomere length for Epitalon; VEGF for BPC-157/TB-500.	Establish personal reference ranges. Fasting 12hr draw preferred. AM cortisol before 9am.	$250-$500
4 weeks into protocol	Focused panel: fasting glucose, fasting insulin, IGF-1 (if GH peptides), liver enzymes (ALT/AST), lipase (if GLP-1), CBC	First checkpoint — catches glucose/insulin changes early. Critical for Retatrutide, Sema/Tirz, MOTS-C, and GH secretagogues.	$80-$150
8-12 weeks (mid-protocol)	Expanded re-test: CMP, HbA1c, IGF-1, lipid panel, thyroid, hs-CRP, hormones, melatonin (if Epitalon), oxidative stress markers (if mito peptides)	Key efficacy checkpoint. Compare to baseline. Adjust dosing if needed.	$150-$300
End of protocol (or 6 months)	Full panel (repeat baseline)	Comprehensive comparison. Include telomere length for Epitalon, VEGF for BPC/TB-500, biological age clock for longevity peptides.	$250-$500
4-6 weeks post-protocol	Focused panel: IGF-1, fasting glucose/insulin, hormones, hs-CRP, melatonin (if Epitalon)	Confirm values returning to baseline. Watch for rebound effects on glucose/insulin.	$100-$200
Ongoing quarterly	Core panel: CMP, CBC, lipids (incl ApoB), HbA1c, fasting insulin, hs-CRP, Vit D, B12, thyroid (TSH + Free T4), ferritin, homocysteine	Standard biohacker maintenance tracking regardless of peptide use.	$100-$200

Priority Legend

C — Critical	Must test. This peptide directly affects this marker or it is essential for safety monitoring.
R — Recommended	Good to have for comprehensive tracking. Part of a standard biohacker panel or provides useful context.
O — Optional	Low direct relevance to this specific peptide but may still be useful for overall health optimization.

DTC Availability Tiers

Easy	Available at all major DTC lab vendors (Ulta Lab Tests, Walk-In Lab, Marek Diagnostics, Life Extension, RequestATest). Typically $10-$60.
Moderate	Available but may require a specialty vendor, individual add-on order, or costs more ($50-$200).
Specialty	Rare or specialized test; may require a telehealth practitioner order (e.g., Vibrant Wellness, Cleveland HeartLab, precisionanalytics.com). $100-$500+.

Safety & Timing Notes

Before starting:	Establish a comprehensive baseline. If you have any metabolic or hormonal issues, get cleared by a practitioner.
During protocol:	Monitor responsibly. Some peptides affect multiple pathways; if you see unexpected changes, pause and retest.
After protocol:	Test 4-6 weeks post to see if values return to baseline or stabilize at improved levels.

DTC Vendors

General Labs
• Ulta Lab Tests
• Walk-In Lab
• RequestATest
• Life Extension
• Marek Diagnostics

Specialty Labs
• Vibrant Wellness
• Cleveland HeartLab
• Quest Diagnostics
• LabCorp
• AnyLabTestNow

Disclaimer

Not Medical Advice: This matrix is for educational and informational purposes only. Peptide use is largely unregulated in the US; sourcing quality products is difficult. Always work with a qualified healthcare provider before starting any protocol. Individual responses vary significantly. This information is community-curated and is not FDA-endorsed.