Mammoth Biotech reviews
Mammoth Biotech reviews: 4 independent lab tests across 1 product, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is Mammoth Biotech legit? Lab record: Limited
How we rate- 4 independent tests
- 1 of 2 lots filled to label
- Median purity 99.9%
- 1 of 1 product graded D or E
Some of Mammoth Biotech's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Tirzepatide
Mammoth Biotech graded E. Paradigm Peptide's Tirzepatide graded A across 10 tests, $4.97 / mg.
Buy from Paradigm PeptideAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where Mammoth Biotech graded D or E, these shops' samples of the same peptide graded A or B. Ordered by grade, then price per mg. Partner status never changes the order.
Mammoth Biotech 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 Mammoth Biotech's site.
- TirzepatideEBAD
- Tests
- 4
- Passed
- 50.0%
What the testing shows
Across 2 measured samples from Mammoth Biotech, 1 came in more than 5% under the quantity on the label (50%). Another 1 measured more than 5% over. Purity across 2 readings ran from 99.9% to 99.9%, median 99.9%. Samples span Sep 2026 to Oct 2026.
- Under label
- 1/2
- Median purity
- 99.9%
- Latest sample
- Oct 2026
more than 5% short
99.9%–99.9% range
first tested Sep 2026
Our read on Mammoth Biotech
2 of Mammoth Biotech's 4 graded samples passed (50%), and 100% of all samples were sent in by buyers rather than by the shop.
When a sample failed, the most common reason was the lab could not confirm it was the labelled peptide (2 times).
When and how Mammoth Biotech was tested
Samples per month. The darker part of each bar failed.
- Labs used
- PharmLabs (2), BTLabs (2)
- Who sent the samples
- buyers 100%
- Batches covered
- 2 distinct batch numbers
Why Mammoth Biotech's failed samples failed
The 2 most recent failed tests, with the lab's reason.
Tirzepatide · Oct 1, 2026
the lab could not confirm it was the labelled peptide
Tirzepatide · Oct 1, 2026
the lab could not confirm it was the labelled peptide
Lab testing results
Independent results across 1 product.
Individual lab tests
Date
10/1/2026
Purity
—
Quantity
—
Lab
PharmLabs
Vial
No label / Silver crimp / Blue cap
Date
10/1/2026
Purity
—
Quantity
—
Lab
PharmLabs
Vial
No label / Silver crimp / White cap
Date
9/19/2026
Purity
99.9%
Quantity
60 mg → 40.9 mg
Lab
BTLabs
Vial
No label / Silver crimp / White cap
Date
9/19/2026
Purity
99.9%
Quantity
30 mg → 33.4 mg
Lab
BTLabs
Vial
No label / Silver crimp / Violet cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideNo label / Silver crimp / Blue cap | 10/1/2026 | — | — | PharmLabs | View | |
| TirzepatideNo label / Silver crimp / White cap | 10/1/2026 | — | — | PharmLabs | View | |
| TirzepatideNo label / Silver crimp / White cap | 9/19/2026 | 10.0 | 99.9% | 60 mg → 40.9 mg | BTLabs | View |
| TirzepatideNo label / Silver crimp / Violet cap | 9/19/2026 | 10.0 | 99.9% | 30 mg → 33.4 mg | BTLabs | View |
Which Mammoth Biotech products tested best
Tirzepatide graded D or E: a large share of its samples missed purity or quantity thresholds.
Buying from Mammoth Biotech
We don't track Mammoth Biotech's prices yet. Shipping, payment and refund terms are on their site.
The official store is Mammoth-Biotech.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 Mammoth Biotech
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Mammoth Biotech: common questions
Is Mammoth Biotech legit?
We rate lab records, not businesses. Limited lab record: 4 independent tests, 1 of 2 lots filled to label, median purity 99.9%, 1 of 1 product graded D or E. Each result links to its original certificate in the table above.
What do Mammoth Biotech reviews say?
We don't hold scored customer reviews for Mammoth Biotech yet. The independent lab results on this page are the evidence we have.
Which Mammoth Biotech peptides tested best?
We have graded 1 Mammoth Biotech product. Tirzepatide graded D or E.
Is there a Mammoth Biotech coupon code?
We don't have a verified Mammoth Biotech coupon code. A discount changes the price, not what is in the vial.
Ordering from Mammoth Biotech?
Limited lab record: 4 independent tests, 1 of 2 lots filled to label, median purity 99.9%, 1 of 1 product graded D or E.