TitrateLab/Vendors/Peptide Gurus
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Peptide Gurus: Independent Lab Review (182 COAs Tested)
Lab-verified evidenceAn independent, evidence-first review of Peptide Gurus — wondering if Peptide Gurus is legit? Every number below is sourced from 182 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
mean across 148 assayed batches
⚠ 26 batches underdosed — worst -100% vs labeled dose
Purity distribution
148 batches · ProCOAs tracked
182
third-party certs
In-spec rate
82%
26 underdosed · worst -100%
Compounds
52
distinct peptides
Coverage
2024-05 → 2026-07
first → latest test
The batch-by-batch distribution is a Pro feature
See every one of Peptide Gurus's 148 assayed batches plotted by purity around the 95.1% average — the real per-batch readings behind the headline stats.
Go Pro — $12/mo or $33 lifetimeDose distribution
156 batches dose-testedPurity 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
60%
within ±10% of label
Median
+4%
vs labeled dose
Worst underfill
-100%
26 batches <−10%
Worst overfill
+56%
37 batches >+10%
The batch-by-batch dose distribution is a Pro feature
See every one of Peptide Gurus's 156 dose-tested batches plotted by deviation from labeled dose — the real per-batch underfill/overfill behind the headline stats.
Go Pro — $12/mo or $33 lifetimeCompounds tested
52 distinct · 182 certsGrouped by class, most-tested first. Tap a linked compound for the full research hub.
No compound matches .
- BPC-157 + TB-500 2
- BPC-157 + GHK-Cu + TB-500 1
Certificates by compound
182 third-party COAs · 53 compoundsEvery third-party certificate of analysis TitrateLab tracks for Peptide Gurus, grouped by compound. Tap a thumbnail for the full certificate image; each links through to its public cert page — purity, method, lab, and test date.
Tirzepatide
BPC-157
Retatrutide
Ipamorelin
Semaglutide
CJC-1295
NAD+
PT-141
TB-500
Epithalon
Show 7 more compounds with 3+ certificates
GHK-Cu
Melanotan II
MOTS-C
Tesamorelin
Cagrilintide
HCG
Compound explorer
53 compounds · 182 certificatesEvery compound Peptide Gurus has certificates for. Switch the measure — each one reports how many certificates it is actually based on, and compounds never tested for that measure drop out rather than showing as zero.
53 compounds, 20 certificates on the busiest
Semaglutide 10
CJC-1295 9
PT-141 7
TB-500 7
Epithalon 5
GHK-Cu 5
Melanotan II 5
MOTS-C 4
Tesamorelin 4
Cagrilintide 3
SS-31 3
BPC-157 + TB-500 2
HGH 2
5-Amino-1MQ 1
AOD-9604 1
BPC-157 + GHK-Cu + TB-500 1
Cardiogen 1
Cartalax 1
CJC-1295 (mod GRF 1-29) 1
DSIP 1
Follistatin 344 1
GHRP-2 1
Glutathione 1
Hexarelin 1
KLOW blend 1
KPV 1
LL-37 1
Nicotinamide mononucleotide 1
Oxytocin 1
PEG-MGF 1
PNC-27 1
Selank 1
Semax 1
SLU PP 332 1
SNAP-8 1
Thymagen 1
Thymosin Alpha-1 1
Thymulin 1
Unknown 1
Community reviews
Pro-member sourcedUnlock Peptide Gurus's full lab evidence
The trust teaser above and the full certificate list are free & always will be. Unlock every batch's purity inline across all 182 certificates, the batch-by-batch purity distribution, the per-compound breakdown, plus live pricing, stock & the full Pro review thread.
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Frequently asked
purity & lab evidenceIs Peptide Gurus legit?
TitrateLab tracks 182 third-party lab certificates of analysis for Peptide Gurus, averaging 95.1% tested purity across 148 assayed batches, with 82% of those batches in spec on both purity (≥90%) and labeled dose (filled to within 10% of the labeled amount); 26 assayed batches were significantly underdosed (worst -100% vs the labeled amount) (tests dated 2024-05-29 to 2026-07-25). 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 Peptide Gurus's average tested purity?
Across the 148 assayed batches TitrateLab tracks for Peptide Gurus, the mean third-party-tested purity is 95.1%. 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 Peptide Gurus?
TitrateLab tracks 182 published third-party certificates of analysis for Peptide Gurus spanning 52 distinct compounds. Each certificate links to its own public page with the purity, test method, issuing lab, and test date.
What share of Peptide Gurus's tested batches are in spec on purity and dose?
82% of the 148 assayed batches TitrateLab tracks for Peptide Gurus (121 of 148) were in spec on BOTH tested purity (at or above 90%) and labeled dose (filled to within 10% of the labeled amount). 26 assayed batches were significantly underdosed against the label (worst -100%), 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.
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 →