What the Methylene Blue record shows

Evidence through 2026-09-10

TitrateLab tracks 22 published Methylene Blue certificate-of-analysis source records through 2026-09-10, each with a recorded purity or measured-versus-label amount result. Across 11 records with a numeric peptide-purity result, including zero, the median reported purity is 98.4%. Across 17 records with measured-versus-label dose data, 71% 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: 2026-10-02T15:57:26.435763+00:00. Calculation time is not a test date.

Published records22
Reported purity98.4% median · 11 results
Dose accuracy71% within ±10% · 17 results
Endotoxin100% pass · 1 determinate results
Evidence dates2025-05-20 to 2026-09-10
Limits and missing evidence
  • Coverage depends on reports that were published and available to ingest.
Assay metrics

Methylene Blue lab-testing metrics

22
Certificates
98.4%
Median reported purity (zero included)
36%
Purity records ≥ 99%
0
Source records reporting zero purity
1
Testing labs
16
Vendors
Mean purity98.3% Below 90% purity0% Mean dose vs label+12.1% Underfilled0% Endotoxin pass100% Within 10% of label dose71% Overdosed ≥ +7%29% Underdosed ≤ −7%12%

COAs per testing lab

Every lab testing Methylene Blue in the corpus.

Freedom Diagnostics 22 98.4% med

Tested-purity distribution

Bins below 90% tested purity (0% of numeric purity records).

Methylene Blue 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%1
96–97%0
97–98%3
98–99%3
99–100%4

COAs over time

Methylene Blue source records by test month (discovery month when test date is absent).

Methylene Blue certificates per month
MonthCertificates
2025-051
2025-062
2025-091
2026-012
2026-022
2026-031
2026-056
2026-072
2026-084
2026-091

Most-tested vendors

Top 10 of 15 vendors by Methylene Blue certificate count.

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Vendor name available with ProExplore reports + 2

Lab evidence

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2 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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Lab evidence

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2 lab reports from this vendor

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Lab evidence

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2 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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Lab evidence

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Explore this vendor’s lab reports

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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Vendor name available with ProExplore reports + 1

Lab evidence

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1 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.

TitrateLab Pro Which vendor is this?

Pro shows the vendor’s name, its original lab reports and batch details.

Vendor behind these reportsVendor name available with Pro
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  • Vendor names on every ranking and chart
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See vendor names with Pro Names, original COAs and batch details

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Vendor name available with ProExplore reports + 1

Lab evidence

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1 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.

TitrateLab Pro Which vendor is this?

Pro shows the vendor’s name, its original lab reports and batch details.

Vendor behind these reportsVendor name available with Pro
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  • Vendor names on every ranking and chart
  • Original COAs with batch details
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See vendor names with Pro Names, original COAs and batch details

Monthly or lifetime plans. Monthly cancels anytime. Compare plans

Vendor name available with ProExplore reports + 1

Lab evidence

Free preview

1 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.

TitrateLab Pro Which vendor is this?

Pro shows the vendor’s name, its original lab reports and batch details.

Vendor behind these reportsVendor name available with Pro
What Pro unlocks
  • Vendor names on every ranking and chart
  • Original COAs with batch details
  • Buyer reviews for each vendor
  • Price and stock alerts for your watchlist
  • Ask Titer, the AI research assistant
See vendor names with Pro Names, original COAs and batch details

Monthly or lifetime plans. Monthly cancels anytime. Compare plans

Vendor name available with ProExplore reports + 1

Lab evidence

Free preview

1 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.

TitrateLab Pro Which vendor is this?

Pro shows the vendor’s name, its original lab reports and batch details.

Vendor behind these reportsVendor name available with Pro
What Pro unlocks
  • Vendor names on every ranking and chart
  • Original COAs with batch details
  • Buyer reviews for each vendor
  • Price and stock alerts for your watchlist
  • Ask Titer, the AI research assistant
See vendor names with Pro Names, original COAs and batch details

Monthly or lifetime plans. Monthly cancels anytime. Compare plans

Vendor name available with ProExplore reports + 1

Lab evidence

Free preview

1 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.

TitrateLab Pro Which vendor is this?

Pro shows the vendor’s name, its original lab reports and batch details.

Vendor behind these reportsVendor name available with Pro
What Pro unlocks
  • Vendor names on every ranking and chart
  • Original COAs with batch details
  • Buyer reviews for each vendor
  • Price and stock alerts for your watchlist
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See vendor names with Pro Names, original COAs and batch details

Monthly or lifetime plans. Monthly cancels anytime. Compare plans

Vendor name available with ProExplore reports + 1

Lab evidence

Free preview

Explore this vendor’s lab reports

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.

TitrateLab Pro Which vendor is this?

Pro shows the vendor’s name, its original lab reports and batch details.

Vendor behind these reportsVendor name available with Pro
What Pro unlocks
  • Vendor names on every ranking and chart
  • Original COAs with batch details
  • Buyer reviews for each vendor
  • Price and stock alerts for your watchlist
  • Ask Titer, the AI research assistant
See vendor names with Pro Names, original COAs and batch details

Monthly or lifetime plans. Monthly cancels anytime. Compare plans

+ 5 more vendors with fewer certificates.

Published Methylene Blue certificates of analysis

22 records. Zero guesswork.

Unlock the actual vendor, purity, dose accuracy, lab, batch and saved certificate for every Methylene Blue result.

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

Reading Methylene Blue lab reports

A valid report describes the sample that was submitted, not every vial sold under the same name. Guide: How to verify and read a peptide COA: 5 checks.

More COA results by compound