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Forums›COA & Analytical Testing › Page 4

Janoshik Analytical — Independent Testing

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COA & Analytical Testing

145 threads · 1.9K posts
DH
New My vendor COA looks sketchy - can someone take a look — anyone have experience?
denise_HTX · Feb 8, 2026
5Replies
798Views
DH
denise_HTX
Feb 8, 2026
MP
Hot Has anyone dealt with are all coas created equal? mine looks different from others i see?
mel_PDX · Feb 2, 2026
31Replies
1.1KViews
MP
mel_PDX
Feb 2, 2026
S
New Paid for independent testing and results did not match vendor COA — looking for input
SandraNC_45 · Jan 28, 2026
11Replies
1.1KViews
S
SandraNC_45
Jan 28, 2026
KA
New Is 98% purity actually good or should I be worried — need advice
kim_atl_prep · Jan 22, 2026
13Replies
1.1KViews
KA
kim_atl_prep
Jan 22, 2026
D
New HPLC vs UPLC for peptide purity — 6 month update
Dr.Martinez · Jan 16, 2026
10Replies
1.0KViews
D
Dr.Martinez
Jan 16, 2026
T
Hot Mass spectrometry for peptide identity verification — March 2026
TirzTom · Jan 10, 2026
40Replies
1.5KViews
T
TirzTom
Jan 10, 2026
AP
Study Endotoxin testing methods — what worked for you?
amsterdam_pete · Jan 4, 2026
22Replies
1.2KViews
AP
amsterdam_pete
Jan 4, 2026
WA
Guide Red flags on COAs — my results so far
WendyG_ATL · Dec 28, 2025
10Replies
970Views
WA
WendyG_ATL
Dec 28, 2025

PeptideMeter — Independent Peptide Analytics

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M
New USP reference standards for peptide verification — anyone have experience?
MariaRD · Dec 22, 2025
7Replies
929Views
M
MariaRD
Dec 22, 2025
J
Hot Has anyone dealt with janoshik vs in-house testing?
JakeSmashed95 · Dec 16, 2025
19Replies
1.4KViews
J
JakeSmashed95
Dec 16, 2025
D
New Batch-to-batch purity variation — looking for input
DoseLogDan · Dec 10, 2025
14Replies
1.2KViews
D
DoseLogDan
Dec 10, 2025
AW
New Sterility testing per USP <71> — need advice
AmyNC_wife · Dec 3, 2025
11Replies
1.1KViews
AW
AmyNC_wife
Dec 3, 2025
AC
New Community-funded testing initiative — 6 month update
A1cHero_PHX · Nov 26, 2025
12Replies
1.1KViews
AC
A1cHero_PHX
Nov 26, 2025
HD
Hot LC-MS/MS vs HPLC for peptide analysis — November 2025
HealthEcon_DC · Nov 19, 2025
29Replies
1.4KViews
HD
HealthEcon_DC
Nov 19, 2025
D
Study Understanding peptide purity percentages — what worked for you?
Dr.NateNeph · Nov 12, 2025
29Replies
1.3KViews
D
Dr.NateNeph
Nov 12, 2025
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