Independent lab evidence

TFC

Tianjin Finder Chemical Tfc

TFC’s lab evidence dates to November 2023 and covers 173 test records across 19 recorded compound names, alongside 627 community reviews. Median purity is 99.8% across 154 positive purity tests.

▸ What you can check next

These results describe the 173 certificates on file for TFC — the batches that were tested, not the vial you are being offered.

Check a batch from TFC Search the public COA corpus by batch or lot number and see whether that exact batch was ever tested. Watch TFC A free account keeps a vendor watchlist. The daily digest of mentions and announcements is part of Pro.
173Test records19 recorded name groups

Reports by test date

2023-11-212026-08-21
99.8%Median purity154 positive purity tests
627Community reviewsRead community experiences →

173 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
1

Endotoxin failures

16 classified tests

3

Expected compound not detected

157 reported purity outcomes

0

Underfilled >15%

2 fill tests · Last 6 months

2

Overfilled >15%

2 fill tests · Last 6 months

2

Reported zero amount

156 numeric amount results

Test results

How the fills compare

55 fill tests · All time

Measured against the printed amount. Finnrick quantities are excluded.

Beyond the purity average

154 positive tests

Mean 99.6% · Median 99.8%. The 90% grouping is not a safety threshold.

Test coverage & missing results

16 records have no usable purity outcome. 118 do not have a comparable fill test. 157 lack a classified endotoxin result. A classified pass does not mean no endotoxin was detected.

Community reviews

All 627 reviews →

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

249Positive
139Neutral
239Negative
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

2023-11-21 — 2026-08-21

Research involving TFC

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 TFC

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

Is TFC legit?

TitrateLab does not rank or recommend vendors; it reports what independent labs measured. TFC shows high measured purity (99.6% mean across 154 positive purity measurements; 3 identity failures reported separately). Dose accuracy is mixed: in the last 12 months 8 of 18 dose results were on target, 1 under label and 9 over; all time 28 of 55 on target, 2 under and 25 over. These results describe tested batches, not every product or shipment.

What is TFC's average purity?

99.6% mean measured purity across 154 positive third-party lab results; 154 were at or above 90% and 0 were below. In 3 additional tests, the labeled compound was not detected.

How many TFC lab certificates has TitrateLab tracked?

173 third-party certificates from 2023-11-21 to 2026-08-21, covering 18 compounds.

How accurate are TFC's doses?

Dose accuracy is mixed: in the last 12 months 8 of 18 dose results were on target, 1 under label and 9 over; all time 28 of 55 on target, 2 under and 25 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 TFC failed an endotoxin test?

Endotoxin was reported on 16 of 173 counted records (9.2%). 1 of 16 classifiable results failed and 1 were borderline.

Sources, definitions & limits

173 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 16 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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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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