What the Vip (modified) record shows

Evidence through 2026-08-24

TitrateLab tracks 8 published Vip (modified) certificate-of-analysis records through 2026-08-24. Across 8 records with a usable peptide-purity result, the median reported purity is 99.3%. Across 8 records with measured-versus-label dose data, 75% 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 records8
Reported purity99.3% median · 8 results
Dose accuracy75% within ±10% · 8 results
EndotoxinNot reported
Evidence dates2026-01-18 to 2026-08-24
Limits and missing evidence
  • No classifiable endotoxin results were recorded.
  • Coverage depends on reports that were published and available to ingest.
Assay metrics

Vip (modified) lab-testing metrics

8
Certificates
99.3%
Median tested purity
100%
Certs ≥ 99% purity
0
Zero-purity certs
1
Testing labs
7
Vendors
Mean purity99.3% Below 90% purity0% Mean dose vs label-5.9% Underfilled25% Within 10% of label dose75% Overdosed ≥ +7%0% Underdosed ≤ −7%50%

COAs per testing lab

Every lab testing Vip (modified) in the corpus.

Freedom Diagnostics 8 99.3% med

Tested-purity distribution

Bins below 90% tested purity (0% of certs).

Vip (modified) tested-purity distribution
Purity rangeCertificates
0–50%0
50–70%0
70–80%0
80–85%0
85–90%0
90–91%0
91–92%0
92–93%0
93–94%0
94–95%0
95–96%0
96–97%0
97–98%0
98–99%0
99–100%8

COAs over time

Vip (modified) certificates published per month.

Vip (modified) certificates per month
MonthCertificates
2026-012
2026-022
2026-031
2026-051
2026-061
2026-081

Most-tested vendors

Vendors by Vip (modified) certificate count.

See who tests most — unlock the vendor names with Pro.

Verified Vendor A 🔒 2
Verified Vendor B 🔒 1
Verified Vendor C 🔒 1
Verified Vendor D 🔒 1
Verified Vendor E 🔒 1
Verified Vendor F 🔒 1
Verified Vendor G 🔒 1

Published Vip (modified) certificates of analysis

8 records. Zero guesswork.

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Illustrative structure only. No record-level values are present in this preview.

More COA results by compound