Peptide Partners vs Zhejiang Yichenkang
Independent side-by-side comparison across the 1 peptides both vendors sell. Composite scores, lab quality, and verified pricing.
Peptide Partners
Peptide Partners ranks A overall on 71 lab tests across 7 peptides, with the Ipamorelin line (avg 9.9 across 7 tests) and Retatrutide line (avg 8.8 across 19 tests) carrying the score. Per-batch COAs are published with HPLC and mass spec; customer satisfaction sits at 4.8/5 acro…
Peptide Partners full review →Side-by-side breakdown
| PEPTIDE | PEPTIDE PARTNERS | ZHEJIANG YICHENKANG | WINNER |
|---|---|---|---|
| Ipamorelin |
9.9
A (7 tests)
|
—(not sold)
|
Peptide Partners only |
| Retatrutide |
8.8
B+ (19 tests)
|
—(not sold)
|
Peptide Partners only |
| Tirzepatide |
8.2
C (6 tests)
|
8.2
B+ (8 tests)
|
tie |
| TB-500 |
8.1
A (11 tests)
|
—(not sold)
|
Peptide Partners only |
| BPC-157 |
8.0
A (7 tests)
|
—(not sold)
|
Peptide Partners only |
| Tesamorelin |
7.8
B+ (11 tests)
|
—(not sold)
|
Peptide Partners only |
| CJC-1295 |
6.7
C (9 tests)
|
—(not sold)
|
Peptide Partners only |
Which to choose
Across the 1 peptides both vendors sell, Peptide Partners scores higher on 0, Zhejiang Yichenkang scores higher on 0, and 1 are within 0.3 points (effectively tied). Peptide Partners additionally sells Ipamorelin, Retatrutide, TB-500, BPC-157, Tesamorelin, CJC-1295; Zhejiang Yichenkang does not.
Either works for Tirzepatide — composite scores are within 0.3 points.
Composite scores reflect lab quality, sentiment, COA transparency, reliability, and price. How we score.
Full profiles: Peptide Partners review · Zhejiang Yichenkang review