# Source Research

> Source Research (sourceresearch.io) supplies lyophilized peptides for laboratory research use only. Not for human or veterinary use. For each lot we publish testing records: independently commissioned laboratory reports, supplier origin COAs from third-party labs the supplier commissioned, where available, and failed results.

- Contact: support@sourceresearch.io
- Mailing address: 1125 E Broadway #2179, Glendale, CA 91205, USA
- Not affiliated with sourceresearch.com.

## Key pages

- [Testing records](https://sourceresearch.io/testing/): lot-by-lot table of HPLC purity, net peptide content, endotoxins, heavy metals (ICP-MS) and PCR sterility screening, with linked COAs
- [Quality assurance protocol](https://sourceresearch.io/quality-assurance-protocol/): what supplier COAs and independent reports each cover, and how to read them
- [Catalog](https://sourceresearch.io/catalog/): current products and prices
- [About](https://sourceresearch.io/about/)
- [Contact](https://sourceresearch.io/contact/)
- [Terms & Conditions](https://sourceresearch.io/terms-conditions/)

## Current lots (from the testing records)

- [BPC-157 10 mg](https://sourceresearch.io/product/bpc-157-10mg/): lot sr-bpc-260316-001, tested 2026-05-11, 99.96% HPLC purity, 10.34 mg net peptide content (tested sample)
- [BPC+TB Blend 20 mg](https://sourceresearch.io/product/bpc-157-tb-500-blend-20mg/): lot sr-bpctb-260316-001, tested 2026-05-11, 99.94% HPLC purity, 21.17 mg net peptide content (tested sample)
- [KLOW Blend 80 mg](https://sourceresearch.io/product/klow-blend-80mg-integrated-peptide-research-compound-2/): lot sr-klow-260316-001, tested 2026-05-11, 99.75% HPLC purity, 83.46 mg net peptide content (tested sample)
- [GHK-Cu 100 mg](https://sourceresearch.io/product/ghk-cu-100mg/): lot sr-cu100-260720-002, tested 2026-08-11, 99.45% HPLC purity, 105.17 mg net peptide content (tested sample)

## Published rejection

- GHK-Cu 100 mg, lot sr-ghkcu-260309-001 (tested 2026-05-11): 99.65% HPLC purity, but cadmium measured 1.312 ppm against the report's 0.5 ppm limit. Source Research states the lot was discarded before sale; the report remains public on the testing records page.