HomeLab Tests crownwellresearch.com, Tirzepatide
Purity · passBatch · CW-TZ10001Shop-provided sample

Tirzepatide × crownwellresearch.com — Lab Test, February 2026

Tested · submitted by @Frank 👑 Legend
Sample source: shop-provided. The shop chose and sent this vial. Samples bought at retail by a member carry more weight.How we weigh evidence →
HPLC Purity
99.88%
Excellent purity only
↓ Download COA
Independently confirmed on the lab’s portal✓ Extra check

COA 2602110326 matches freedomdiagnosticstesting.com's public record. So this test doesn't rest on our review alone — the lab confirms it too.

Lookup codeCrow2602110326

Test results

7 data points
Purity
99.88%
Endotoxins
Not tested
Heavy metals
Not tested
Stated qty
10 mg
Tested qty
11.76 mg
Qty match
118% of labeled · +18%
0label125%
Batch / Lot
CW-TZ10001
COA number
2602110326
Container
White Lyophilized Powder
Tested by

This is a purity and identity analysis. Sterility, endotoxins, and heavy metals were not screened — a high purity figure says nothing about those.

About this test

Independent HPLC purity analysis of Tirzepatide from crownwellresearch.com, performed by freedomdiagnosticstesting.com on February 14, 2026. Reported purity: 99.88%. Net content: 11.76 mg against 10 mg labeled (118% of label). Tested content exceeds the labeled amount by 18%. Batch CW-TZ10001. Sample source: shop-provided. Certificate of analysis attached.

Certificate of analysis

Original document
Certificate of analysis for Tirzepatide from crownwellresearch.com, issued by freedomdiagnosticstesting.com
Issued by freedomdiagnosticstesting.com · Feb 14, 2026 · Batch CW-TZ10001

Related lab tests

8 tests

The 833 other Tirzepatide tests on Peptigrity range from 98.00% to 100.00%. This one sits at 99.88%.

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