Peptide Watchdogs
Research tools

Calculate and verify research vials.

Use the reconstitution calculator and compare labs that may be able to run purity, identity, sterility, or endotoxin checks. Research use only.

Calculator Labs

Reconstitution calculator

U-100 math

Inputs

mg
ml
mcg

Units assume a U-100 syringe. This is research math only, not dosing or medical advice.

Results

Units to draw-
Liquid volume-
Concentration-
Per unit-
Draws per vial-

Round physical measurements carefully and follow your lab protocol.

Compare testing labs

prices checked July 8, 2026

Public price examples

These are listed prices found on official lab pages, not negotiated quotes. The cheapest lab still needs to match the compound, sample form, method, report format, and shipping rules.

Test Janoshik Chromate MZ Biolabs Freedom Diagnostics
GLP-1 peptides $360 blind GLP-1 test $300 each for semaglutide, tirzepatide, or retatrutide Quote required Not public
BPC-157 $215 $180 Quote required Not public
AOD-9604 $215 HPLC or $340 LCMS+CHNS $180 Quote required Not public
HGH $360 amount/purity or $500 with dimer $300 hGH or $420 with dimer Quote required Not public
Sterility / endotoxin $290 sterility / $180 endotoxin $240 each Quote required Not public

Best public pricing signal: Chromate for many common US peptide tests; Janoshik for broader public peptide menu and verification infrastructure. MZ Biolabs and Freedom Diagnostics need direct pricing confirmation.

Janoshik Analytical

Global sample intake

Visit
PeptidesHPLCLC-MSPublic verification
Price signal
Public peptide menu shows many single-peptide tests at $215-$450; common GLP-1 blind test is $360; HGH with dimer is $500.
Examples
  • GLP-1 blind test: $360
  • BPC-157 / Ipamorelin / TB-500: $215
  • AOD-9604: $215 HPLC or $340 LCMS+CHNS
  • HGH amount + purity: $360; HGH with dimer: $500
Best for
Blind peptide amount, purity, and identity checks, especially GLP-1 samples.
Methods / signals
Peptide testing catalog, digital reports, public-result verification.
Watch item
Strong public pricing and report-verification signals. Confirm current sample amount, turnaround, and shipping instructions before sending.

MZ Biolabs

United States

Visit
Mass spectrometryHPLCCustom methodsCOA testing
Price signal
No public peptide COA price list found on the verified pages; quote required.
Examples
  • COA testing page confirms HPLC-UV plus mass spectrometry
  • Covers peptides, SARMs, nootropics, vitamins, and research compounds
  • Ask for quote by compound, sample form, report scope, and turnaround
Best for
Custom analytical work when you need a US lab that can discuss method fit.
Methods / signals
Mass spectrometry, QTOF, HPLC, ESI/APCI, COA testing.
Watch item
Good candidate for method-development conversations. Pricing should be requested before adding them to a public cheapest-lab comparison.

Chromate

United States

Visit
Supplement analysisUS receivingVerify portal
Price signal
Public research-peptide pricing lists common peptides from $180-$300, GLP-1s at $300, complex peptides at $380, and HGH with dimer at $420.
Examples
  • Semaglutide / Tirzepatide / Retatrutide: $300
  • AOD-9604 / BPC-157 / Ipamorelin / TB-500: $180
  • Cagrilintide / KPV / MOTS-c: $380
  • Sterility or endotoxin: $240 each; additional peptide vial: $50
Best for
US-based independent supplement or product analysis conversations.
Methods / signals
Supplement analysis, sample receiving, online result verification portal.
Watch item
Best public US price list found in this pass. Confirm exact method and whether your sample needs identity confirmation beyond HPLC.

Freedom Diagnostics

On-file COA evidence

View COAs
PeptidesHPLCLC-MSOn-file COAsBatch reports
Price signal
No public price list or intake page found; use only as on-file COA evidence until directly confirmed.
Examples
  • Appears on 16 PRP COAs in our records
  • COA records show purity, identity confirmation, lot, accession/search code, and reported date
  • Do not list as a send-out option until availability and pricing are confirmed
Best for
Reviewing batch-tied peptide COAs currently published on Peptide Watchdogs.
Methods / signals
On-file reports list accession/search code, lot, reported date, purity, identity confirmation, and net content where available.
Watch item
Appears on 16 Precision Research Peptides COAs in our records. Public intake/contact page not found in this check, so confirm availability before treating it as a send-out lab.

Lab entries are starting points, not endorsements. Always confirm current scope, legality, sample requirements, price, turnaround, and shipping rules before sending material.

Frequently asked

How does the reconstitution calculation work?
Concentration = peptide mg divided by diluent ml. On a U-100 syringe, 100 units = 1 ml, so 1 unit = 0.01 ml. The calculator converts that into mcg per unit and units to draw. This is research math only.
Does Peptide Watchdogs endorse the listed labs?
No. The finder is a shortlist of labs to contact. The right lab depends on compound, sample form, location, method, report requirements, and legal/shipping constraints.
Are the lab prices guaranteed?
No. Prices are public examples checked from official lab pages on July 8, 2026. Always confirm current price, sample requirement, method, turnaround, and report format before shipping material.