Faithful Chemical reviews
Faithful Chemical reviews: 3 independent lab tests across 1 product, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is Faithful Chemical legit? Lab record: Limited
How we rate- 3 independent tests
- 0 of 2 lots filled to label
- Median purity 99.8%
Opens the vendor's site. We don't earn from this link, and no one pays to rank.
Vendor website
Visit Faithful Chemical
3 independent COAs · not paid-to-rank · 2 of 2 lots under label
Visit Faithful ChemicalOpens the vendor site. No partner discount on this shop.
Peptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Faithful Chemical products we've tested
Best-graded first. Grades come from the share of each product's samples that passed purity and quantity checks. Buy links open Faithful Chemical's site.
- Tests
- 3
- Passed
- —
What the testing shows
Across 2 measured samples from Faithful Chemical, 2 came in more than 5% under the quantity on the label (100%). Purity across 2 readings ran from 99.7% to 99.9%, median 99.8%. Samples span May 2026 to Aug 2026.
- Under label
- 2/2
- Median purity
- 99.8%
- Latest sample
- Aug 2026
more than 5% short
99.7%–99.9% range
first tested May 2026
Our read on Faithful Chemical
0 of Faithful Chemical's 2 graded samples passed (0%), and 100% of all samples were sent in by buyers rather than by the shop.
When a sample failed, the most common reason was amount in the vial more than 35% off the label (2 times).
When and how Faithful Chemical was tested
Samples per month. The darker part of each bar failed.
- Labs used
- BTLabs (2), Krause Analytical (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 1 distinct batch numbers; 2 checked for endotoxins
Why Faithful Chemical's failed samples failed
The 2 most recent failed tests, with the lab's reason.
Retatrutide · Aug 4, 2026
amount in the vial more than 35% off the label
Retatrutide · May 2, 2026
amount in the vial more than 35% off the label
Lab testing results
Independent results across 1 product.
Individual lab tests
Date
8/4/2026
Purity
99.9%
Quantity
20 mg → 9.36 mg
Lab
Krause Analytical
Vial
White Label / Copper Crimp / Clear Cap
Date
5/2/2026
Purity
—
Quantity
—
Lab
BTLabs
Vial
No Label / Copper Crimp / Clear Cap
Date
5/2/2026
Purity
99.7%
Quantity
20 mg → 9.3 mg
Lab
BTLabs
Vial
No Label / Copper Crimp / Clear Cap
Which Faithful Chemical products tested best
2 of 2 measured lots came in more than 5% under label.
Buying from Faithful Chemical
We don't track Faithful Chemical's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.faithful-chemical.com. Check the address before you pay.
What to check before you pay
- The lot number on the vial matches the certificate
- The certificate names the lab and the test date
- Fill versus label, not purity alone
- A refund policy in writing
Track Faithful Chemical
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Faithful Chemical: common questions
Is Faithful Chemical legit?
We rate lab records, not businesses. Limited lab record: 3 independent tests, 0 of 2 lots filled to label, median purity 99.8%. Each result links to its original certificate in the table above.
What do Faithful Chemical reviews say?
We don't hold scored customer reviews for Faithful Chemical yet. The independent lab results on this page are the evidence we have.
Is there a Faithful Chemical coupon code?
We don't have a verified Faithful Chemical coupon code. A discount changes the price, not what is in the vial.
Ordering from Faithful Chemical?
Limited lab record: 3 independent tests, 0 of 2 lots filled to label, median purity 99.8%.