Independent lab evidence
Peptide Gurus
Peptide Gurus’s lab evidence dates to May 2024 and covers 196 test records across 60 recorded compound names, alongside 0 community reviews. Median purity is 99.6% across 149 positive purity tests.
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Reports by test date
197 published records · 1 excluded by the current index · Names on reports; vendor role unverified. A test record is not necessarily a unique certificate.
Key facts
All time unless datedEndotoxin failures
2 classified tests
Expected compound not detected
155 reported purity outcomes
Underfilled >15%
33 fill tests · Last 6 months
Overfilled >15%
33 fill tests · Last 6 months
Reported zero amount
169 numeric amount results
Test results
How the fills compare
117 fill tests · All timeMeasured against the printed amount. Finnrick quantities are excluded.
Beyond the purity average
149 positive testsMean 99.2% · Median 99.6%. The 90% grouping is not a safety threshold.
Test coverage & missing results
41 records have no usable purity outcome. 79 do not have a comparable fill test. 194 lack a classified endotoxin result. A classified pass does not mean no endotoxin was detected.
Community reviews
Buyer experiences—not lab results or verified purchases.
No approved reviews on file yet.
Prices & value
Market price index →Recorded offers—not a live stock guarantee. Package quantity, delivery market and price basis stay attached.
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Evidence over time
Dated records—not a performance trend2024-05-29 — 2026-09-01
Research involving Peptide Gurus
All research →Published investigations, with the sources and context behind the findings.
No vendor-specific investigations are listed yet. The lab evidence and community reviews are available in their tabs.
Questions about Peptide Gurus
Answers based on the published evidence—not a vendor endorsement.
Is Peptide Gurus legit?
TitrateLab does not rank or recommend vendors; it reports what independent labs measured. Peptide Gurus shows high measured purity (99.2% mean across 149 positive purity measurements; 6 identity failures reported separately). Dose accuracy is mixed: in the last 12 months 36 of 54 dose results were on target, 3 under label and 15 over; all time 80 of 117 on target, 3 under and 34 over. These results describe tested batches, not every product or shipment.
What is Peptide Gurus's average purity?
99.2% mean measured purity across 149 positive third-party lab results; 148 were at or above 90% and 1 was below. In 6 additional tests, the labeled compound was not detected.
How many Peptide Gurus lab certificates has TitrateLab tracked?
197 third-party certificates from 2024-05-29 to 2026-09-01, covering 59 compounds. 1 duplicate certificate was excluded from the counts.
How accurate are Peptide Gurus's doses?
Dose accuracy is mixed: in the last 12 months 36 of 54 dose results were on target, 3 under label and 15 over; all time 80 of 117 on target, 3 under and 34 over. A dose result compares the measured amount with the amount printed on the label: under is more than 10% below, over is more than 10% above, on target is everything in between. Finnrick results are excluded because that lab measures against the vendor's batch claim. Missing values are never counted as passes.
Has Peptide Gurus failed an endotoxin test?
Endotoxin was reported on 2 of 196 counted records (1.0%). No failures were recorded in those 2. Coverage is too limited for a vendor-wide conclusion.
Sources, definitions & limits
197 published records are attributed to this vendor. The current certificate index excludes 1 repeated records using file hashes and supported lab verification links. Missing identity keys can leave repeated certificates. Recorded name groups can include variants, mixtures and unclassified names.
Evidence dates describe the tested samples, not when the vendor was founded, current stock, or a performance trend. Purity uses positive measurements only. Exact-zero purity is a not-detected identity outcome, not proof of an empty vial. A zero measured amount requires an explicit numeric amount result; missing amounts are not zero.
Underfills and overfills here exceed 15% in either direction against the printed amount. Vendor batch claims are not used; Finnrick quantity comparisons are excluded. Recent outcomes cover 2026-03-17 through 2026-09-17, inclusive. The older published ±10% partition may appear in the existing FAQ and is a different, explicitly labelled threshold. Missing tests are not passing results.
Endotoxin failures, borderline outcomes and passes use the recorded lab verdict. A pass is not proof of no endotoxin. Only 2 records have a classifiable result. Community sentiment describes reviews, not laboratory measurements or independently verified purchases. Results are not certification, medical advice or endorsement.
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