GYC

Is GYC legit?

TitrateLab has 325 lab test records for GYC, tested from to , covering 35 product names. Median measured purity is 99.8% across 255 purity tests, and none was below 90%. 3 tests did not detect the expected compound. In the last 6 months, 25 fill tests compared the measured amount with the label: 2 were more than 15% under and 1 was more than 15% over. 3 of 17 classified endotoxin tests failed. 1 was borderline. The latest report is 2 months old. Buyers have left 34 approved reviews: read the GYC reviews. Lab results describe the batches that were tested, not every product or order.

325Test records35 recorded name groups

Reports by test date

2024-09-302026-09-18

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99.8%Median purity255 positive purity tests
34Community reviewsRead GYC reviews →
3

Endotoxin failures

17 classified tests · All time

3

Expected compound not detected

258 reported purity outcomes · All time

2

Underfilled >15%

25 fill tests · Last 6 months

1

Overfilled >15%

25 fill tests · Last 6 months

0

Reported zero amount

229 numeric amount results · All time

None recorded

Lab reports

325 test records on file · September 2024 to September 2026

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Test results

How the fills compare

178 fill tests · All time

Measured against the printed amount. Finnrick quantities are excluded.

Beyond the purity average

255 positive tests

Mean 99.7% · Median 99.8%. The 90% grouping is not a safety threshold.

Test coverage & missing results

67 records have no usable purity outcome. 147 do not have a comparable fill test. 308 lack a classified endotoxin result. A classified pass does not mean no endotoxin was detected.

Reports behind these results

Select a result above to list its reports here.

GYC reviews

The 10 most recent approved reviews. Buyer experiences—not lab results or verified purchases.

30Positive
2Neutral
2Negative
0Unclassified
Revieweriqeas VendorGYC
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Reviewerlielaislaunags VendorGYC
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Reviewerm.mikaela1980gmail.com_35338 VendorGYC
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Public review excerpts

Prices & value

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Questions about GYC

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

Is GYC legit?

TitrateLab has 325 lab test records for GYC, tested from September 30, 2024 to September 18, 2026, covering 35 product names. Median measured purity is 99.8% across 255 purity tests, and none was below 90%. 3 tests did not detect the expected compound. In the last 6 months, 25 fill tests compared the measured amount with the label: 2 were more than 15% under and 1 was more than 15% over. 3 of 17 classified endotoxin tests failed. 1 was borderline. The latest report is 2 months old. Buyers have left 34 approved reviews: read the GYC reviews. 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 GYC's average purity?

99.7% mean measured purity across 255 positive purity tests; 0 below 90%. The 90% grouping is not a safety threshold. 3 additional tests did not detect the expected compound.

How many GYC lab test records has TitrateLab tracked?

TitrateLab has 325 lab test records for GYC. Tested from 2024-09-30 to 2026-09-18. A test record is not necessarily a unique certificate. 2 repeated records excluded by the certificate index.

How do GYC's measured fills compare with the label?

Last 6 months: 22 of 25 fill tests within ±15% of label, 2 more than 15% under and 1 more than 15% over. All time: 139 of 178 fill tests within ±15% of label, 2 more than 15% under and 37 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 GYC failed an endotoxin test?

Of 17 classified endotoxin tests, 3 failed, 1 was borderline and 13 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.

327 published records are attributed to this vendor. The current certificate index excludes 2 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 17 records have a classifiable result. Community sentiment describes reviews, not laboratory measurements or independently verified purchases. Results are not certification, medical advice or endorsement.

Independent evidence · Not certification or endorsement · Browse vendors

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