TitrateLab/Vendors/Grey Market Peptides

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Grey Market Peptides: Independent Lab Review (143 COAs Tested)

Lab-verified evidence
Also searched as Grey Market Peptide

An independent, evidence-first review of Grey Market Peptides — wondering if Grey Market Peptides is legit? Every number below is sourced from 143 third-party lab certificates of analysis, not vendor marketing. The headline trust stats are free; the batch-by-batch evidence, every certificate, pricing & stock are TitrateLab Pro.

Average purity

99.4%

mean across 70 assayed batches

68 in spec (purity + dose) 2 out of spec

⚠ 2 batches underdosed — worst -75% vs labeled dose

Purity distribution

70 batches · Pro
Batch-level purity distribution Exact points, outliers, and certificate links are available with Pro. Inspect the evidence  →

COAs tracked

143

third-party certs

In-spec rate

97%

2 underdosed · worst -75%

Compounds

62

distinct peptides

Coverage

2026-02 → 2026-03

first → latest test

Dose distribution

17 batches dose-tested

Purity tells you how clean the peptide is. Dose tells you how much you actually got — tested milligrams vs the labeled amount. A vial can be 99% pure and still badly underfilled, which never shows on the purity chart. On-target means within ±10% of label; anything outside (under or over) is off-target.

On-target

24%

within ±10% of label

Median

+26%

vs labeled dose

Worst underfill

-75%

2 batches <−10%

Worst overfill

+48%

11 batches >+10%

Batch-level dose distribution Exact fill deviations, outliers, and certificate links are available with Pro. Inspect the evidence  →

Compounds tested

62 distinct · 143 certs

Grouped by class, most-tested first. Tap any compound to expand its Grey Market Peptides certificate archive. Certificate details remain obscured until Pro.

  • NAD+ 3
  • CJC-1295 w/ DAC 1
  • BPC-157 + GHK-Cu + KPV + TB-500 2
  • CJC-1295 + Ipamorelin 2
  • BPC-157 + GHK-Cu + TB-500 1
  • BPC-157 + TB-500 1
  • BPC-157 + TB-500 + Thymosin Alpha-1 1

Certificate archive

143 third-party COAs · Pro

The evidence count and headline aggregates are public. Individual certificates and batch-level results require TitrateLab Pro.

Unlock all 143 certificates

Open the full archive with certificate images, labs, test dates, measured purity, dose accuracy, and the batch-by-batch history for Grey Market Peptides.

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Per-compound purity

mean purity by peptide · Pro

Average assayed purity for each of 62 compounds — the batch-level breakdown behind the headline average. Tap the tile to unlock with Pro.

View per-compound purity · Pro

Community reviews

Pro-member sourced
No community reviews yet. Pro members can post the first.

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The aggregate trust teaser above is free. Pro unlocks all 143 certificates and every batch's purity, the batch-by-batch purity distribution, the per-compound breakdown, plus live pricing, stock & the full review thread.

Inline purity, all 143 batches Batch-by-batch distribution Per-compound breakdown Live price & $/mg Current stock Every full review
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Frequently asked

purity & lab evidence
Is Grey Market Peptides legit?

TitrateLab tracks 143 third-party lab certificates of analysis for Grey Market Peptides, averaging 99.4% tested purity across 70 assayed batches, with 97% of those batches in spec on both purity (≥90%) and labeled dose (filled to within 10% of the labeled amount); 2 assayed batches were significantly underdosed (worst -75% vs the labeled amount) (tests dated 2026-02-16 to 2026-03-13). These are purity analytics from independent certificates, not vendor marketing — TitrateLab does not rank or endorse vendors, and this is research-use-only information, not a recommendation to purchase or use any product.

What is Grey Market Peptides's average tested purity?

Across the 70 assayed batches TitrateLab tracks for Grey Market Peptides, the mean third-party-tested purity is 99.4%. Purity is measured on the specific batches that were submitted for analysis and is not a guarantee for any other lot.

How many lab certificates does TitrateLab track for Grey Market Peptides?

TitrateLab tracks 143 published third-party certificates of analysis for Grey Market Peptides spanning 62 distinct compounds. Each certificate links to its own public page with the purity, test method, issuing lab, and test date.

What share of Grey Market Peptides's tested batches are in spec on purity and dose?

97% of the 70 assayed batches TitrateLab tracks for Grey Market Peptides (68 of 70) were in spec on BOTH tested purity (at or above 90%) and labeled dose (filled to within 10% of the labeled amount). 2 assayed batches were significantly underdosed against the label (worst -75%), so they are counted as out of spec even where tested purity was high. This reflects only the batches that were tested and is analytic information for research use, not a quality guarantee for any order.

Answers are derived from the third-party lab certificates TitrateLab tracks for this vendor and describe tested purity only. This is research-use-only information, not medical advice and not a recommendation to purchase or use any product.

Head to head Compare Grey Market Peptides vs Peptaris Side-by-side lab purity, in-spec rate & COA count — independent evidence.

How this is sourced. TitrateLab tracks certificates of analysis posted by the community and verified against the issuing lab. Purity, test dates, and compound names shown here are the same facts published on each public certificate page — aggregated, never edited. The in-spec rate counts a batch only when it clears both purity (≥90%) and labeled dose (filled to within 10% of label, where dose data exists); it reflects the batches that were tested and is not a guarantee of every order. Scores come only from lab data — no vendor pays for placement, and customer orders or Pro never move a grade. Browse the COA corpus →