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A live read of the PeptideDetective database — 43,128 individual lab results across 218 vendors and 295 products, as of 21 Aug 2026.

218
Vendors rated
45% earned an A
295
Products tested
across 4 categories
35k
Samples graded
43,128 lab results
7
Partner labs
blind-rotated A–G

Vendor grade distribution

218 vendors
45%
rated A
A · Great 98 45%
B · Good 40 18%
C · Fair 31 14%
D · Poor 9 4%
E · Bad 12 6%
X · N/A 28 13%

Samples over time

lab results / month
44321.6k3.2k2.8k6.1k1.3k1.8k2.6k15k3.8k3.2k1.0k
Aug 25Sep 25Oct 25Nov 25Dec 25Jan 26Feb 26Mar 26Apr 26May 26Jun 26Jul 26Aug 26

Testing volume scaled sharply through 2026 as PeptideDetective re-sampled high-traffic vendors — the May surge reflects a focused re-test of the most-ordered GLP-1 products.

Category performance

Sample-weighted average score

Peptides

102 products · 21,988 samples
6.6/ 10 avg

Raw Materials

77 products · 9,378 samples
6.4/ 10 avg

Oral Tablets

59 products · 8,412 samples
6.5/ 10 avg

Injectable Oils

57 products · 7,699 samples
6.5/ 10 avg

Vendor leaderboards

Min. 3 graded samples

Best vendors

Highest average
1
Tianjin Finder Chemical TFC
A · 1730 tests
10.0
2
Homopeptide
A · 1620 tests
10.0
3
WuXi TIDES
A · 1166 tests
10.0
4
Kerui Peptides
A · 910 tests
10.0
5
Chinese Peptide Company
A · 908 tests
10.0
6
Shanghai Sigma Audley
A · 900 tests
10.0
7
QYAOBIO
A · 899 tests
10.0
8
Hubei Jianxiang
A · 897 tests
10.0
9
Hybio Pharmaceutical
A · 894 tests
10.0
10
SinoPep
A · 894 tests
10.0
11
GenScript Peptides
A · 892 tests
10.0
12
Bachem
A · 888 tests
10.0

Lowest-rated vendors

Lowest average
1
Peptides For Sale
D to E · 21 tests
3.1
2
Biolabshop Limited
C to E · 6 tests
3.3
3
Peptide Gurus
B to E · 45 tests
3.6
4
Swiss Chems
C to E · 9 tests
3.6
5
Guangzhou Lengiuanhuang Cosmetics
E · 4 tests
3.8
6
Deuschem
A to E · 29 tests
4.1
7
Peptides 4 Research
C to E · 20 tests
4.3
8
Qingdao VitaConin International Trading
E · 5 tests
4.3
9
Coastal Peptides
A to E · 26 tests
4.7
10
Amplified Amino
C to E · 12 tests
4.9
11
Alimo Peptide
D to E · 7 tests
4.9
12
Tydes
C to E · 41 tests
5.0

Most-tested products

By sample count
1
Retatrutide
174 vendors · Peptides
2,016
2
Tirzepatide
148 vendors · Peptides
1,474
3
BPC-157
92 vendors · Peptides
518
4
GHK-Cu
74 vendors · Peptides
414
5
Semaglutide
77 vendors · Peptides
394
6
Ipamorelin
77 vendors · Peptides
348
7
CJC-1295
73 vendors · Peptides
330
8
Tesamorelin
59 vendors · Peptides
325
9
MOTS-C
102 vendors · Peptides
250
10
CJC-1295 With DAC
100 vendors · Peptides
245
11
IGF-1 LR3
100 vendors · Peptides
245
12
Selank 10mg + Semax 10mg Blend
100 vendors · Peptides
243

Lab workload

Results processed
Lab E
6,263
Lab G
6,160
Lab A
6,089
Lab C
6,083
Lab F
6,074
Lab B
5,972
Lab D
5,918
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