TriedRx Beta
Independent. Unbiased. Unsponsored.

Peptide vendors, ranked.

Every vendor we track, scored across the peptides they sell. Aggregated from independent testing programs and vendor-published COAs, sentiment from r/Peptides community, COAs from vendor publications. How we score.

Vendors tracked
218
Lab reports aggregated
3,420
Peptides covered
86
Last sync
2026-04-30
#VendorTypeGradeScorePeptidesTestsCOAUpdatedProfile
1 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 t…
 Research A 8.4 7 71 per-batch 2026-04-29 Peptide Partners review →
2 Great Basin Bio Supply
Newer entrant. BPC-157 scores 8.5 across 2 tests (high purity 99.0–99.4%).
 Research B+ 8.2 2 4 per-batch 2026-04-29 Great Basin Bio Supply review →
3 Yabang Peptide
Chinese manufacturer with low pricing. BPC-157 averages 8.1 across 2 tests.
 Manufacturer B+ 7.8 2 4 limited 2026-04-29 Yabang Peptide review →
4 Polaris Peptides
9 peptides with 97 lab tests. Tirzepatide and PT-141 grade A; Retatrutide drops to D due to wider score variance.
 Research B+ 7.6 9 97 per-batch 2026-04-29 Polaris Peptides review →
5 Bulk Peptide Wholesale
BPC-157 specialist. 3 tests averaging 8.0 (purity 98.5–99.2%).
 Research B+ 7.6 1 3 per-batch 2026-04-29 Bulk Peptide Wholesale review →
6 Aavant Research
A grades on Tirzepatide (9 tests, avg 8.7) and Semaglutide (11 tests). Tighter score consistency than top peers.
 Research B+ 7.5 4 32 per-batch 2026-04-29 Aavant Research review →
7 Peptime
BPC-157 specialist. 2 tests averaging 7.5 (purity 98.4–99.0%).
 Research B+ 7.5 2 4 per-batch 2026-04-29 Peptime review →
8 Paradigm Peptide
Top Retatrutide vendor by score (9.0 across 14 tests). Strong on metabolic peptides.
 Research B+ 7.4 6 54 per-batch 2026-04-29 Paradigm Peptide review →
9 Suaway Lab Research
BPC-157 averages 7.3 across 5 tests (purity 97.8–98.4%).
 Research B 7.3 1 5 limited 2026-04-29 Suaway Lab Research review →
10 Coffee and Peppers
2 BPC-157 tests averaging 7.2 (purity 97.5–98.3%).
 Research B 7.2 1 2 limited 2026-04-29 Coffee and Peppers review →
11 Shanghai JinBei Chemical
Manufacturer with focus on Tirzepatide. 9 tests averaging 8.6/10. Less Western community sentiment.
 Manufacturer B 7.0 3 28 limited 2026-04-29 Shanghai JinBei Chemical review →
12 Limitless Life Nootropics
14 peptides covered with 58 lab tests. BPC-157 averages 6.6 across 6 tests with consistency penalty triggered.
 Research B 6.8 14 58 limited 2026-04-29 Limitless Life Nootropics review →
13 Astro Peptides
8 peptides with 43 lab tests. Lowest verified $/mg on Semaglutide ($7.90/mg vs $9.40 market median).
 Research B 6.7 8 43 per-batch 2026-04-29 Astro Peptides review →
14 Zhejiang Yichenkang Manufacturer B 6.6 4 18 limited 2026-04-30 Zhejiang Yichenkang review →
15 Precision Peptide Co
BPC-157 grades B (5 tests, avg 8.1) with high score (9.0) and low score (6.0) producing a consistency penalty.
 Research B 6.5 6 23 per-batch 2026-04-29 Precision Peptide Co review →
16 Forever Young Pharmacy
503A compounding pharmacy. BPC-157 averages 7.2 across 5 tests. Most recent test from February 2025 — staleness flag.
 Compounding B 6.4 5 19 per-batch 2026-04-29 Forever Young Pharmacy review →
17 Peptide Technologies
5 BPC-157 tests with score variance 5.0–10.0. GHK-Cu and Ipamorelin coverage solid.
 Research B 6.3 8 31 limited 2026-04-29 Peptide Technologies review →
18 NuLife Peptides Research C 5.8 2 6 limited 2026-04-30 NuLife Peptides review →
19 Verified Peptides
BPC-157 averages 4.5 (purity range 95.8–97.4%). Below the consistency threshold.
 Research D 4.5 3 7 limited 2026-04-29 Verified Peptides review →

19 vendors ranked. Composite scores reflect lab quality, sentiment, COA transparency, reliability, and price. How we score.