Peptide Partners vs Polaris Peptides
Independent side-by-side comparison across the 4 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 →Polaris Peptides
9 peptides with 97 lab tests. Tirzepatide and PT-141 grade A; Retatrutide drops to D due to wider score variance.
Polaris Peptides full review →Side-by-side breakdown
| PEPTIDE | PEPTIDE PARTNERS | POLARIS PEPTIDES | WINNER |
|---|---|---|---|
| Ipamorelin |
9.9
A (7 tests)
|
8.0
B+ (5 tests)
|
Peptide Partners |
| Retatrutide |
8.8
B+ (19 tests)
|
7.3
B (26 tests)
|
Peptide Partners |
| Tirzepatide |
8.2
C (6 tests)
|
8.8
B+ (15 tests)
|
Polaris Peptides |
| TB-500 |
8.1
A (11 tests)
|
—(not sold)
|
Peptide Partners only |
| BPC-157 |
8.0
A (7 tests)
|
5.4
C (11 tests)
|
Peptide Partners |
| Tesamorelin |
7.8
B+ (11 tests)
|
—(not sold)
|
Peptide Partners only |
| CJC-1295 |
6.7
C (9 tests)
|
—(not sold)
|
Peptide Partners only |
| GHK-Cu |
—(not sold)
|
8.8
B+ (8 tests)
|
Polaris Peptides only |
| Semaglutide |
—(not sold)
|
6.9
B (16 tests)
|
Polaris Peptides only |
Which to choose
Across the 4 peptides both vendors sell, Peptide Partners scores higher on 3, Polaris Peptides scores higher on 1, and 0 are within 0.3 points (effectively tied). Polaris Peptides additionally sells GHK-Cu, Semaglutide; Peptide Partners does not. Peptide Partners additionally sells TB-500, Tesamorelin, CJC-1295; Polaris Peptides does not.
Choose Peptide Partners for: Ipamorelin, Retatrutide, BPC-157.
Choose Polaris Peptides for: Tirzepatide.
Composite scores reflect lab quality, sentiment, COA transparency, reliability, and price. How we score.
Full profiles: Peptide Partners review · Polaris Peptides review