Peptide Sciences

Is Peptide Sciences legit?

TitrateLab has 133 lab test records for Peptide Sciences, tested from to , covering 10 product names. Median measured purity is 99.7% across 113 purity tests, and none was below 90%. 20 tests did not detect the expected compound. No fill test is from the last 6 months. None of the 3 classified endotoxin tests failed. 20 results reported a zero amount. The latest report is 4 months old. Lab results describe the batches that were tested, not every product or order.

Peptide Sciences shut down on March 6, 2026, according to its own notice. Results dated after that day may come from stock bought earlier or from someone else using the name. Read what is known about the closure.

133Test records10 recorded name groups

Reports by test date

2024-12-172026-07-20

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99.7%Median purity113 positive purity tests
0Community reviewsNo approved reviews yet
0

Endotoxin failures

3 classified tests · All time

20

Expected compound not detected

133 reported purity outcomes · All time

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Underfilled >15%

No fill test in the last 6 months

Not tested
—

Overfilled >15%

No fill test in the last 6 months

Not tested
20

Reported zero amount

133 numeric amount results · All time

Lab reports

133 test records on file · December 2024 to July 2026

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Test results

How the fills compare

1 fill tests · All time

Measured against the printed amount. Finnrick quantities are excluded.

Beyond the purity average

113 positive tests

Mean 99.6% · Median 99.7%. The 90% grouping is not a safety threshold.

Test coverage & missing results

0 records have no usable purity outcome. 132 do not have a comparable fill test. 130 lack a classified endotoxin result. A classified pass does not mean no endotoxin was detected.

Reports behind these results

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Peptide Sciences reviews

Buyer experiences—not lab results or verified purchases.

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0Neutral
0Negative
0Unclassified

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Prices & value

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Questions about Peptide Sciences

Answers based on the published evidence—not a vendor endorsement.

Is Peptide Sciences legit?

TitrateLab has 133 lab test records for Peptide Sciences, tested from December 17, 2024 to July 20, 2026, covering 10 product names. Median measured purity is 99.7% across 113 purity tests, and none was below 90%. 20 tests did not detect the expected compound. No fill test is from the last 6 months. None of the 3 classified endotoxin tests failed. 20 results reported a zero amount. The latest report is 4 months old. Lab results describe the batches that were tested, not every product or order.

How to check if a peptide vendor is legit: six checks, and what they cannot prove.

What is Peptide Sciences's average purity?

99.6% mean measured purity across 113 positive purity tests; 0 below 90%. The 90% grouping is not a safety threshold. 20 additional tests did not detect the expected compound.

How many Peptide Sciences lab test records has TitrateLab tracked?

TitrateLab has 133 lab test records for Peptide Sciences. Tested from 2024-12-17 to 2026-07-20. A test record is not necessarily a unique certificate.

How do Peptide Sciences's measured fills compare with the label?

Last 6 months: no comparable fill test. All time: 1 of 1 fill tests within ±15% of label, 0 more than 15% under and 0 more than 15% over. The measured amount is compared with the printed label. Finnrick quantity comparisons are excluded because they use a vendor batch claim. Missing tests are not passes.

Has Peptide Sciences failed an endotoxin test?

Of 3 classified endotoxin tests, 0 failed, 0 were borderline and 3 passed. A pass does not mean no endotoxin was detected.

Sources, definitions & limits

Names on reports; vendor role unverified. A test record is not necessarily a unique certificate.

The reports describe the batches that were tested, not an untested vial or an offer from this vendor.

133 published records are attributed to this vendor. The current certificate index excludes 0 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 2026-05-01 through 2026-11-01, inclusive. The summary, charts and FAQ use these same definitions. 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 3 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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