Lab Testing

Lab testing — HPLC chromatograms, COA reading, Janoshik testing, peptide purity analysis, and sterility testing.

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Pinned Lab-talk ground rules — data first, feelings second
p pepsreview_mod
2
2814
victor705 2026-08-29
nexaph kit: is 3P testing worth it for one order?
f fiona-wilson55
0
751
fiona-wilson55 2026-10-27
The lab sheet in my refill folder confused me
v victor455
0
803
victor455 2026-10-19
A video about vial codes got me checking my box
l laura484
0
703
laura484 2026-10-18
Third-party testing: do you verify the lab or just shrug?
m mark884
0
793
mark884 2026-10-11
Do you actually read the lab PDFs before ordering?
g grace962
0
970
well_laura 2026-10-08
Are fentanyl screens on peptide lab reports becoming routine?
c core_edward
0
1136
jordan_82 2026-10-08
How long do you wait before sending a follow-up?
q quinn900
0
888
nathan191 2026-10-08
I paid out of pocket to verify a lab sheet
e emmaGlp173
0
1280
Victor_C 2026-10-07
HPLC says 98.7% but independent lab shows 1.4% shoulder
t trial_tracker
18
1276
lab32 2026-10-03
Same vial, two HPLC labs, 5.5% purity gap?
p patricia637
12
1886
jessica_52 2026-10-01
Same sample, two labs, 1.8% purity gap — normal?
a a_m_93
16
2549
amber_83 2026-09-28
Same batch, two COAs: 4.2% purity gap — method or sample?
x xX_sarah_Xx
15
1602
grant_reviewer 2026-09-27
Independent HPLC 91.2% vs COA 98.7% - same vial?
d davidHealth58
14
2426
data_miner_dan 2026-09-27
Independent HPLC 93.2% vs COA 97.8% — method artifact?
a ashley-scott44
15
3580
fiona_14 2026-09-03
HPLC 98.7% but LC-MS TIC shows extra peaks?
w well_sanne
14
2094
stable_stella 2026-08-22