USA origin, cGMP production, and evidence you can review
All Precisely Peptides research peptides are USA-sourced and synthesized in the USA.
Black Label research peptides are produced in cGMP facilities. Black Label adds deeper testing and air shipping at no charge while retaining the same research-use-only boundary.
Clear scope: USA sourcing and USA synthesis apply to all Precisely Peptides research peptides. Production in cGMP facilities is a Black Label distinction. Compare Precision Line and Black Label.
What Black Label adds
cGMP production
Black Label research peptides are produced in cGMP facilities, distinguishing the line from Precision Line.
Published batch evidence
Black Label pairs its seven-test program with USA ISO-accredited laboratory testing and available Certificates of Analysis.
Air shipped at no charge
Black Label orders are shipped by air at no charge, making the fulfillment distinction clear before purchase.
The seven-test program, step by step
The Precision Line is 4× tested — identity, purity, net peptide content and a fentanyl screen, on every lot. Black Label adds heavy metals, sterility and endotoxin testing for a 7× program.
- ID Identity (HPLC-RTM) Both product lines Confirms the peptide in the vial is the peptide on the label, by HPLC retention-time match.
- ≥99% Peptide purity (HPLC) Both product lines Purity measured by high-performance liquid chromatography and reported as a percentage on the certificate.
- mg Net peptide content Both product lines Actual milligrams of peptide in the vial, quantified and reported for the released lot.
- F Fentanyl screen Both product lines Screened for fentanyl by immunoassay against a 50 ng/mL cutoff, reported as detected or not detected.
- ICP Heavy metals (ICP-MS) Black Label only Elemental analysis by inductively coupled plasma mass spectrometry, including lead, mercury, cadmium and chromium against stated limits.
- PCR Sterility (PCR) Black Label only Molecular sterility testing, reported against a no-growth specification.
- EU Endotoxin (USP <85>) Black Label only Bacterial endotoxin quantified in EU/mL against the stated acceptance limit.
Analytical results are reported on the batch certificate. Open the COA library to read one before you order.
Black Label evidence at a glance
These statements describe Precisely Peptides products directly, without making assumptions about another supplier’s origin or practices.
| Attribute | Precisely Peptides statement |
|---|---|
| Sourcing | Research peptides are USA-sourced. |
| Synthesis | Research peptides are synthesized in the USA. |
| Facility standard | Black Label research peptides are produced in cGMP facilities. |
| Testing | Black Label follows a seven-test program that includes USA ISO-accredited laboratory testing. |
| Documentation | Batch Certificates of Analysis are available for review. |
| Shipping | Black Label is shipped by air at no charge. |
How to evaluate the line
Compare the two lines
Review which standards are shared and which apply only to Black Label on the product-line comparison.
Review the batch COA
Use the COA library to examine the documentation available for a specific research product.
Confirm the selected variation
On eligible product pages, choose the Line before Vial Size so the exact available variation is clear.
Ask a documentation question
If a page does not answer a procurement question, contact our team before ordering.
Choose the product line that matches your research procurement criteria.
For research use only. Not for human consumption. Not for diagnostic, therapeutic, veterinary, or any non-research use.
Analytical specifications are stated on each Certificate of Analysis. Full policy: Research Use Only disclaimer.
