Welli Labs Lab Results
Welli Labs has 120 published certificates of analysis covering 64 product sizes, tested by Freedom Diagnostics and ILS Laboratories. The latest is Tesamorelin 20mg, tested August 13, 2026, at 99.72% purity.
64 Welli Labs Certificates of Analysis
GLP-3R
- 10mg5 tests passed: Purity, Identity, Sterility, Heavy Metals, Fentanyl Screen·99.58%10.45 mg
- 14mg5 tests passed: Purity, Identity, Sterility, Heavy Metals, Fentanyl Screen·99.85%14.47 mg
- 15mg4 tests passed: Purity, Identity, Sterility, Heavy Metals·99.68%15.69 mg
- 20mg2 tests passed: Purity, Endotoxins·99.80%21.05 mg
- 30mg2 tests passed: Purity, Endotoxins·99.81%34.58 mg
- 50mg5 tests passed: Purity, Identity, Sterility, Heavy Metals, Fentanyl Screen·99.90%51.21 mg
GLP-2T
- 10mg5 tests passed: Purity, Identity, Sterility, Heavy Metals, Fentanyl Screen·99.41%10.84 mg
- 20mg2 tests passed: Purity, Endotoxins·99.58%23.05 mg
- 30mg5 tests passed: Purity, Identity, Sterility, Heavy Metals, Fentanyl Screen·99.83%31.13 mg
- 40mg4 tests passed: Purity, Identity, Sterility, Heavy Metals·99.81%41.82 mg
- 60mg2 tests passed: Purity, Endotoxins·99.79%67.36 mg
- 100mg4 tests passed: Purity, Identity, Sterility, Heavy Metals·99.88%104.87 mg
Questions about Welli Labs
PeptiPrices indexes 120 published certificates of analysis from Welli Labs, covering 64 product sizes.
Freedom Diagnostics and ILS Laboratories.
Yes. Its published certificates come from Freedom Diagnostics and ILS Laboratories, independent testing labs.
Welli Labs' published certificates cover Purity (64 sizes), Identity (42 sizes), Endotoxins (46 sizes), Sterility (38 sizes), Bioburden (2 sizes), Heavy Metals (38 sizes) and Fentanyl Screen (13 sizes).
Yes. 42 tested sizes have an Identity test, including Tesamorelin 20mg, GLP-3R 50mg and GLP-2T 30mg.
Yes. 46 tested sizes have an Endotoxin test, including Bacteriostatic Water 10mL, Bacteriostatic Water 3mL and PT-141 10mg.
Yes. 38 tested sizes have a Sterility test, including Tesamorelin 20mg, GLP-3R 50mg and GLP-2T 30mg.
Yes. 2 tested sizes have a Bioburden test, including Bacteriostatic Water 10mL and Bacteriostatic Water 3mL.
Yes. 38 tested sizes have a Heavy Metals panel, including Tesamorelin 20mg, GLP-3R 50mg and GLP-2T 30mg.
Yes. 13 tested sizes have a Fentanyl screen, including Tesamorelin 20mg, GLP-3R 50mg and GLP-2T 30mg.
Welli Labs' published certificates report between 98.31% and 99.96% purity across 64 tested sizes.
Tesamorelin 20mg, tested by ILS Laboratories on August 13, 2026, reported 99.72% purity and 20.9 mg measured content.
Yes. 10mg at 99.58% purity (ILS Laboratories, May 20, 2026); 14mg at 99.85% purity (ILS Laboratories, July 3, 2026); 15mg at 99.68% purity (ILS Laboratories, April 4, 2026); 20mg at 99.80% purity (Freedom Diagnostics, March 18, 2026); 30mg at 99.81% purity (Freedom Diagnostics, February 17, 2026).
Yes. 10mg at 99.41% purity (ILS Laboratories, June 5, 2026); 20mg at 99.58% purity (Freedom Diagnostics, February 7, 2026); 30mg at 99.83% purity (ILS Laboratories, July 10, 2026); 40mg at 99.81% purity (ILS Laboratories, April 4, 2026); 60mg at 99.79% purity (Freedom Diagnostics, January 21, 2026).
Yes. 10mg at 99.43% purity (Freedom Diagnostics, April 25, 2026); 20mg at 99.54% purity (ILS Laboratories, April 4, 2026); 40mg at 99.40% purity (Freedom Diagnostics, November 22, 2025).