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ForumApex Peptides and the North Sioux City search: what's confirmed and what buyers can check· Shop talk · last reply 2 h ago
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Prostamax lab tests

14 certificates of analysis for Prostamax are on file, from 13 shops and 7 labs. The latest was tested on .

These are certificates shops have chosen to publish, verified for authenticity before listing. Because shops decide which COAs to make public, the set reflects the batches they published rather than every production batch — a selection bias we state openly. What shop COAs show →

Tests on file
14
all single vials
Median purity
99.59%
usual 99.20–99.87% · shop COAs
Measured vs label
109%
median · 1 under 90% · 2 over 120%
Latest test
7 labs · 13 shops
Look up your vial's lot →Prostamax prices →Get a vial tested

What the Prostamax record shows

Prostamax's record holds 14 certificates from 13 shops, tested by 7 labs between January 2025 and September 2026. Reported HPLC purity ran from 99.01% to 99.93% (median 99.59%). Measured content ran from 81% to 128% of the label (median 109%); 1 vial came in under 90%. 11 of the 14 vials were labelled 20 mg. 3 certificates include an endotoxin result, and 6 were confirmed on the lab's own portal. freedomdiagnosticstesting.com ran 5 of the 14 tests.

Generated from the table below · updates with every new certificate

Every published Prostamax test

14 · newest first
14 records, most recent first.
TestedShopLabPurityMeasured vs labelEndotoxinRecord
Humatide PeptidesILS Laboratories99.23%20.48 / 20 mg 102% of label—H20PRST073126
BioEdge Research LabsKovera Labs99.58%22.42 / 20 mg 112% of labelPass05122026PRO20✓
Molecular Solutions Peptidesfreedomdiagnosticstesting.com99.25%22.4 / 20 mg 112% of labelPassR260616-MX20-W001✓
Umbrella LabsVanguard Laboratory99.80%9.31 / 10 mg 93% of label—ULP-49011
RC PeptidesJanoshik Labs99.53%22.34 / 20 mg 112% of label—008
Core PeptidesVanguard Laboratory99.01%20 / 20 mg 100% of label—C73714✓
PeptideTechfreedomdiagnosticstesting.com99.19%16.23 / 20 mg 81% of label—PRO-6975✓
American PeptidesBioviridian99.90%12.82 / 10 mg 128% of labelPassPROS20-0318
Liberty PeptidesHorizon Analytical99.24%19.65 / 20 mg 98% of label—LPUS48001
Molecular Solutions Peptidesfreedomdiagnosticstesting.com99.61%24.82 / 20 mg 124% of label—R260110-MX20-W001✓
Amino Techfreedomdiagnosticstesting.com99.77%21.7 / 20 mg 109% of label—View record →
Grey Market Peptidefreedomdiagnosticstesting.com99.77%21.7 / 20 mg 109% of label—View record →
Verified PeptidesJanoshik Labs99.65%21.99 / 22 mg 100% of label—PRO01260220A
Royal PeptidesJanoshik Labs99.93%22.65 / 20 mg 113% of label—View record →

Measured amount in amber when it is under 90% or over 130% of the label; Check label when it is under 80% or over 150%. Records without a lot number link as View →.

Seven checks for any Prostamax certificate

  1. Batch-matched and independent. The certificate names the lot in your hands and comes from a lab the vendor neither owns nor pays.
  2. Purity against the range. Read the figure against what other certificates for this compound report. How to read HPLC and mass-spec results
  3. Mass-spec identity. Only mass spectrometry shows which molecule is in the vial.
  4. Net content, measured. Purity and quantity are separate questions. Why 10 mg isn't 10 mg
  5. Endotoxin on the batch. A missing line means not tested, not passed. Endotoxin testing and LAL interpretation
  6. A lab you can check. Named on the certificate, with a way to verify it. Testing labs we track · Red flags in a certificate of analysis
  7. What no test shows. A clean certificate says nothing about efficacy, dosing or long-term safety.
Want a vial tested yourself? How to send a peptide for independent HPLC testing →

Related lab tests

More on Prostamax

Prostamax — compound profilewhat it is, shops, purityProstamax prices$/mg across lab-tested shopsCOA benchmarkswhat shop COAs show and leave outGet a peptide testedlabs, prices, what to orderCheck your viallook up a lot number

Labs with Prostamax tests on file (7): ILS Laboratories, Kovera Labs, freedomdiagnosticstesting.com, Vanguard Laboratory, Janoshik Labs, Bioviridian, Horizon Analytical