Independent lab evidence

QYC

Shanxi Qianyecao Biotech Qyc

QYC’s lab evidence dates to November 2024 and covers 207 test records across 26 recorded compound names, alongside 76 community reviews. Median purity is 99.7% across 187 positive purity tests.

▸ What you can check next

These results describe the 207 certificates on file for QYC — the batches that were tested, not the vial you are being offered.

Check a batch from QYC Search the public COA corpus by batch or lot number and see whether that exact batch was ever tested. Watch QYC A free account keeps a vendor watchlist. The daily digest of mentions and announcements is part of Pro.
207Test records26 recorded name groups

Reports by test date

2024-11-082026-09-05
1 without a valid past test date
99.7%Median purity187 positive purity tests
76Community reviewsRead community experiences →

207 published records · 0 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 dated
0

Endotoxin failures

3 classified tests

5

Expected compound not detected

192 reported purity outcomes

0

Underfilled >15%

17 fill tests · Last 6 months

5

Overfilled >15%

17 fill tests · Last 6 months

5

Reported zero amount

185 numeric amount results

Test results

How the fills compare

60 fill tests · All time

Measured against the printed amount. Finnrick quantities are excluded.

Beyond the purity average

187 positive tests

Mean 99.1% · Median 99.7%. The 90% grouping is not a safety threshold.

Test coverage & missing results

15 records have no usable purity outcome. 147 do not have a comparable fill test. 204 lack a classified endotoxin result. A classified pass does not mean no endotoxin was detected.

Community reviews

All 76 reviews →

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

56Positive
14Neutral
6Negative
0Unclassified
Read more reviews →
Public review excerpts

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 trend

2024-11-08 — 2026-09-05

Research involving QYC

All research →

Published investigations, with the sources and context behind the findings.

Questions about QYC

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

Is QYC legit?

TitrateLab does not rank or recommend vendors; it reports what independent labs measured. QYC shows high measured purity (99.1% mean across 187 positive purity measurements; 5 identity failures reported separately). Dose accuracy is mixed and no recent result was under label: in the last 12 months 20 of 30 dose results were on target, 0 under label and 10 over; all time 38 of 60 on target, 1 under and 21 over. These results describe tested batches, not every product or shipment.

What is QYC's average purity?

99.1% mean measured purity across 187 positive third-party lab results; 186 were at or above 90% and 1 was below. In 5 additional tests, the labeled compound was not detected.

How many QYC lab certificates has TitrateLab tracked?

207 third-party certificates from 2024-11-08 to 2026-09-05, covering 25 compounds.

How accurate are QYC's doses?

Dose accuracy is mixed and no recent result was under label: in the last 12 months 20 of 30 dose results were on target, 0 under label and 10 over; all time 38 of 60 on target, 1 under and 21 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 QYC failed an endotoxin test?

Endotoxin was reported on 3 of 207 counted records (1.4%). No failures were recorded in those 3. Coverage is too limited for a vendor-wide conclusion.

Sources, definitions & limits

207 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 2026-03-17 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 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.

Independent evidence · Not certification or endorsement · Browse vendors

Supporting reports

COA report
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For order cards marked TitrateLab protected: Test what we sold you, and if it comes back under 95% purity and more than 13% underdosed, we reimburse 50% of your lab report and reship the product free. Both conditions have to be met.

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