Great Basin Bio Supply vs Polaris Peptides
Independent side-by-side comparison across the 1 peptides both vendors sell. Composite scores, lab quality, and verified pricing.
Great Basin Bio Supply
Newer entrant. BPC-157 scores 8.5 across 2 tests (high purity 99.0–99.4%).
Great Basin Bio Supply 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 | GREAT BASIN BIO SUPPLY | POLARIS PEPTIDES | WINNER |
|---|---|---|---|
| BPC-157 |
8.5
A (2 tests)
|
5.4
C (11 tests)
|
Great Basin Bio Supply |
| GHK-Cu |
—(not sold)
|
8.8
B+ (8 tests)
|
Polaris Peptides only |
| Tirzepatide |
—(not sold)
|
8.8
B+ (15 tests)
|
Polaris Peptides only |
| Ipamorelin |
—(not sold)
|
8.0
B+ (5 tests)
|
Polaris Peptides only |
| Retatrutide |
—(not sold)
|
7.3
B (26 tests)
|
Polaris Peptides only |
| Semaglutide |
—(not sold)
|
6.9
B (16 tests)
|
Polaris Peptides only |
Which to choose
Across the 1 peptides both vendors sell, Great Basin Bio Supply scores higher on 1, Polaris Peptides scores higher on 0, and 0 are within 0.3 points (effectively tied). Polaris Peptides additionally sells GHK-Cu, Tirzepatide, Ipamorelin, Retatrutide, Semaglutide; Great Basin Bio Supply does not.
Choose Great Basin Bio Supply for: BPC-157.
Composite scores reflect lab quality, sentiment, COA transparency, reliability, and price. How we score.
Full profiles: Great Basin Bio Supply review · Polaris Peptides review