Compare lab measurements, vendor test histories and original reports for CJC-1295.
What the CJC-1295 record shows
Evidence through 2026-10-15
TitrateLab tracks 1,024 published CJC-1295 certificate-of-analysis source records through 2026-10-15, each with a recorded purity or measured-versus-label amount result. Across 1,023 records with a numeric peptide-purity result, including zero, the median reported purity is 99.6%. Across 853 records with measured-versus-label dose data, 46% are within 10% of the labeled quantity. This is a public convenience sample, not a randomized market survey; one result describes one submitted sample and does not verify other batches.
Published records with a non-null purity or measured-versus-label amount result. Matching uses a normalized compound slug. No deduplication in this archive summary; relays and corrected records can remain separate. Records with neither measurement are excluded here, but can appear in the research overview's exact-token raw-record total. These are not unique certificates or batches. TitrateLab indexes reports from third-party laboratories.
Aggregate calculated: 2026-10-18T09:33:28.918142+00:00. Calculation time is not a test date.
Published records1,024
Reported purity99.6% median · 1,023 results
Dose accuracy46% within ±10% · 853 results
Endotoxin100% pass · 35 determinate results
Evidence dates2019-11-10 to 2026-10-15
Limits and missing evidence
The testing laboratory is unattributed on 6 records.
Coverage depends on reports that were published and available to ingest.
CJC-1295 lab-testing metrics
1,024
Certificates
99.6%
Median reported purity (zero included)
78%
Purity records ≥ 99%
39
Source records reporting zero purity
13
Testing labs
400
Vendors
Mean purity94.1%Below 90% purity10%Mean dose vs label+1.1%Underfilled17%Endotoxin pass100%Within 10% of label dose46%Overdosed ≥ +7%46%Underdosed ≤ −7%20%
COAs per testing lab
Top 12 of 14 labs by certificate count.
Freedom Diagnostics58699.7% med
Finnrick (Lab E)14799.4% med
Janoshik9199.4% med
Finnrick (Lab A)6396.7% med
Finnrick (Lab B)3487.3% med
Finnrick (Lab D)3098.1% med
Finnrick (Lab C)2699.7% med
Finnrick (Lab G)1999.6% med
Finnrick (Lab F)1393.3% med
Unattributed / lab unknown695% med
Chromate299.7% med
Peptide Test295% med
+ 2 more labs with fewer certificates.
Tested-purity distribution
Bins below 90% tested purity (10% of numeric purity records).
CJC-1295 tested-purity distribution
Purity range
Certificates
0–50%
42
50–70%
10
70–80%
12
80–85%
11
85–90%
24
90–91%
8
91–92%
8
92–93%
5
93–94%
7
94–95%
9
95–96%
6
96–97%
11
97–98%
20
98–99%
48
99–100%
802
COAs over time
CJC-1295 source records by test month (discovery month when test date is absent).
CJC-1295 certificates per month
Month
Certificates
2019-11
1
2021-02
1
2023-03
1
2023-05
1
2023-09
2
2023-11
3
2023-12
1
2024-01
1
2024-02
1
2024-03
2
2024-04
1
2024-05
1
2024-06
1
2024-07
3
2024-08
2
2024-09
1
2024-10
3
2024-12
2
2025-01
9
2025-02
51
2025-03
23
2025-04
33
2025-05
54
2025-06
16
2025-07
26
2025-08
19
2025-09
16
2025-10
34
2025-11
40
2025-12
48
2026-01
49
2026-02
78
2026-03
56
2026-04
55
2026-05
71
2026-06
75
2026-07
74
2026-08
79
2026-09
72
2026-10
18
Most-tested vendors
Top 10 of 15 vendors by CJC-1295 certificate count.
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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11 lab reports from this vendor
This chart compares report counts for this compound. A larger test history does not establish better purity, dose accuracy or endotoxin results. Inspect the individual reports to compare measurements.
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