Peptide Testing & Certificates of Analysis (COA)
Every batch is tested before release by an independent, accredited U.S. laboratory. Lab results published for 14 products — find yours by lot number. Find your Halo Labs lot’s purity results, test date and testing laboratory.
Look Up Your COA
Enter the lot number from your product vial to view purity results, test date, and lab verification data for your batch.
Our testing standard
Every batch is tested before release by an independent, accredited U.S. laboratory. Lab results published for 14 products — find yours by lot number. Match your vial to its report and see the evidence behind your research materials.
Why we test
Know what’s in the vial
Mass spectrometry supports identity confirmation by comparing observed and expected mass.
Know how pure it is
HPLC separates a sample’s components to measure chromatographic purity.
Know which lot you have
Lot-level traceability connects the number on your vial to its laboratory results.
How we test
All active results listed here report purity of ≥99%.
Find the testing method on your lot’s original certificate of analysis.
Tested by Horizon Analytical
Tested by Horizon Analytical, an independent, accredited U.S. laboratory. Each lot lists its testing laboratory alongside the results.
Active lot results
- Active products with a COA
- 56%
- Lots with dated test results
- 14
- Compounds with test results
- 14
- Average purity across 14 lots
- 99.324%
- Lowest reported
- 99.15%
- Latest test
- Apr 30, 2026
Calculated from the active records listed below. Purity statistics use 14 exact numeric results; missing values and results reported only as a bound are excluded.
How to read your COA
- Lot number
- The identifier that connects a vial to its batch record. Match the number on your label to the report.
- Test date
- When the laboratory performed the test. Separate from manufacture and expiry dates.
- HPLC purity (%)
- The share of measured chromatographic signal attributed to the target compound. Purity is separate from the quantity in the vial.
- Mass spec identity
- Observed mass compared with expected mass to assess molecular identity.
- Testing laboratory
- The laboratory that performed the testing recorded on your report.
Active lot index
Browse the published records by compound, then match the lot number to your vial. Older records remain available through the lookup above.
MOTS-C
Lot HLS-4301315-P
- Purity
- 99.39%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
Sermorelin
Lot HLS-3758495-P
- Purity
- 99.27%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
GHK-Cu
Lot HLS-9250030-P
- Purity
- 99.51%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
NAD+
Lot HLS-7932744-P
- Purity
- 99.39%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
BPC-157
Lot HLS-4900644-P
- Purity
- 99.39%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
Tesamorelin
Lot HLS-4867057-P
- Purity
- 99.23%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
GLP-1
Lot HLS-4193082-P
- Purity
- 99.19%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
Semax
Lot HLS-8422357-P
- Purity
- 99.45%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
GLP-3
Lot HLS-7672189-P
- Purity
- 99.33%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
Thymosin Alpha 1
Lot HLS-1947064-P
- Purity
- 99.32%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
Ipamorelin
Lot HLS-5192680-P
- Purity
- 99.15%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
TB-500
Lot HLS-5928420-P
- Purity
- 99.4%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
GLP-2
Lot HLS-9872072-P
- Purity
- 99.15%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
Selank
Lot HLS-2406449-P
- Purity
- 99.37%
- Test date
- Apr 30, 2026
- Laboratory
- Horizon Analytical
14 active lots · Page 1 of 1
Testing questions
What is HPLC purity testing?
High-performance liquid chromatography (HPLC) separates the components in a sample. The purity percentage is the share of measured chromatographic signal attributed to the target compound. It measures chromatographic purity, not the quantity in a vial.
What does mass spectrometry confirm?
Mass spectrometry measures mass-to-charge ratios. Comparing the observed and expected mass supports confirmation of the sample’s molecular identity. Your lot report records the method and identity findings.
Who tests Halo Labs peptides?
Tested by Horizon Analytical, an independent, accredited U.S. laboratory. Each lot lists its testing laboratory alongside the results.
How do I find the COA for my vial?
Enter the lot number printed on your vial in the COA lookup, or browse the active lot index by compound. If you cannot find a match, contact support with your lot and order number.
Is every batch tested?
Every batch is tested before release by an independent, accredited U.S. laboratory. Lab results are published per lot. 14 of 25 active products (56%) have an active COA in this index. If your lot is missing, enter its number in the lookup above or contact support with your lot and order number.
What purity do your peptides test at?
Average purity across 14 lots: 99.324%. Lowest reported: 99.15%. These figures use exact numeric results from active lot records; missing results and results reported only as a bound are excluded. Find your lot for its individual result.
For Research Use Only
All Halo Labs products are intended solely for in vitro laboratory research by qualified professionals. COA documentation is provided to support research records and quality verification. These products have not been evaluated by the FDA and are not approved for human or veterinary use.
Need Help Finding Your COA?
Contact our support team with your order number and lot number. Our team can help locate the matching documentation.
