Nexaph reviews usually focus on one product, but the lab record on Peptide Vendor Reviews is unusually deep: 295 independently tested vials across 15 peptides, with the newest test dated Oct 9, 2026. That record earns Nexaph a B overall (86/100). The interesting part is where it loses points.
Contents
# Nexaph reviews: the headline record
- Overall rating: B, 86/100.
- Identity: 289 of 295 vials were the labelled peptide.
- Test results: B, 82/100. 144 of 289 held within 10% of the labelled amount, and purity ranged from 63.84% to 99.99%.
- Failed the basic check: 117 of 294 vials, mostly for purity under 99.5% (103), then an amount more than 35% off the label (14) and identity not confirmed (5).
- Strength of evidence: A, 85/100. 260 vials were sent in anonymously by buyers and 35 were bought by the tester; 269 of 295 trace to a batch; 28 were checked for contamination.
- Shop reputation: not reviewed yet.
# Strong evidence, uneven fill
With almost 300 results, the grade is not a fluke in either direction. The compounds are nearly always what the label says. The weak spot is how much is in the vial: only about half of the measured vials landed within 10% of the label. That pattern repeats across products, which is why the overall test score is a B rather than an A.
# The largest product records
- Retatrutide: B from 103 vials; 55 of 102 within 10%; furthest off +93.33%; estimated $2.46/mg.
- Tirzepatide: B from 62 vials, all the right peptide; 29 of 62 within 10%; estimated $1.13/mg.
- Tesamorelin: C from 30 vials; purity as low as 63.84%; 10 of 29 within 10%; estimated $2.88/mg.
- BPC-157: C from 20 vials; 13 of 19 within 10%; estimated $1.52/mg.
# Where other shops grade higher
- Retatrutide: Peptide Partners holds an A from 32 vials, at an estimated $4.79/mg (95% more than Nexaph).
- BPC-157: HK Peptides holds a B from 22 vials at an estimated $0.82/mg.
- Tesamorelin: Shanghai ERP peptide Biotechnology holds a B from 13 vials at an estimated $1.45/mg.
# How to use this record
Look up the grade for the compound you need, not the shop average, then match your batch number to a certificate and confirm it on the lab’s site. Every vial is listed in the complete Nexaph lab record, and other shops are on Peptide Vendor Reviews. Grades describe tested samples, not future batches.
Compiled by Jian Wang (Peptide Vendor Reviews). The site earns commissions on some shop links; grades are not affected. Research-use information only, not medical advice.