Halcyon Biosciences

Aggregated across every sample the Institute purchased anonymously and sent for independent laboratory analysis.

This company is ranked in every compound the Institute has tested it for.

• #1 GHRP-2 of 3 companies · 2 samples 98.4% average purity across 2 samples
• #1 KPV of 3 companies · 1 sample 94.3% average purity across 1 sample
• #2 CJC-1295 of 7 companies · 2 samples 98.3% average purity across 2 samples
• #2 TB-500 of 6 companies · 1 sample 98% average purity across 1 sample
• #2 Gonadorelin of 3 companies · 2 samples 99% average purity across 2 samples
• #2 GHK-Cu of 4 companies · 1 sample 98.2% average purity across 1 sample
• #2 Exenatide of 2 companies · 1 sample 98.3% average purity across 1 sample
• #2 Thymulin of 2 companies · 1 sample 94.6% average purity across 1 sample
• #3 Tirzepatide of 13 companies · 1 sample 99.2% average purity across 1 sample
• #3 Melanotan I of 3 companies · 1 sample 98.5% average purity across 1 sample
• #6 BPC-157 of 12 companies · 1 sample 97.3% average purity across 1 sample

Score Breakdown

Six weighted dimensions, methodology Methodology v3.0. How weights work →

Score History

Historical Index Score™ snapshots. Scores are versioned and never overwritten.

Editorial Assessment

This company is among the more transparent operators we track. Batch documentation is published rather than supplied on request, laboratory names are disclosed, and our sampling has generally corroborated the published figures. Documentation is not the same thing as quality, but in our testing it has been the single most reliable leading indicator of it.

Shipping & fulfillment

Cold-chain shipping with temperature logging available on request. Typical dispatch within one business day.

Policies & returns

Published returns policy with a defined window and a documented resolution path.

Testing record

15 independent tests, 15 verified.