How much does peptide testing cost?
Identity and purity together are $189 for most peptides and $289 for GLP-1 class compounds. Everything else is an add-on you can see priced before you pay, and the same number appears on the quote, the invoice and the certificate.
Prices per test
| Test | Method | Price |
|---|---|---|
| Identity by LC-MS/MS and purity by HPLC-UV, together | MethodAgilent 6490 and 1290; the pair most buyers order | Price$189 (GLP-1 class $289) |
| Identity alone | MethodLC-MS/MS, ±0.1 Da | PriceIncluded with base identity and purity |
| Purity alone | MethodRP-HPLC-UV 214 nm with DAD peak purity | PriceIncluded with base identity and purity |
| Net peptide content vs certified reference standard | Methodmg of active peptide per vial and % of label claim | Price+$29 |
| Endotoxin, USP <85> | MethodDestructive; extra vial | Price+$199 |
| Sterility, USP <71>, 14-day | MethodAdds 14 days to turnaround; extra vial | Price+$195 |
| Heavy metals, ICP-MS, USP <232>/<233> | MethodDestructive, needs a second unit; extra vial | Price+$169 |
| Karl Fischer water content | MethodCoulometric titration, % w/w | Price+$49 |
| Trifluoroacetic acid (TFA) by ion chromatography | MethodResidual TFA counter-ion, LOQ 0; extra vial | Price+$179 |
| Residual solvents, USP <467>, GC-MS | Method16 analytes, reported against LOQ; extra vial | PriceConfirm scope and pricing |
| Enclosure integrity, vial vacuum in PSI | MethodMeasures the residual vacuum of the sealed vial before opening; reported in PSI | PriceConfirm scope and pricing |
| Solubility, reconstitution check | MethodEach vial must dissolve completely into a clear solution at 2 mL water | PriceConfirm scope and pricing |
| Fentanyl and analog screen, LC-MS/MS | MethodTargeted MRM screen for fentanyl and its common analogs (carfentanil, acetylfentanyl, furanylfentanyl and others) plus nitazenes, reported as detected or not detected against a 1 ng/mL cut-off | Price+$199 |
| Post-reconstitution stability, 7-day | MethodVial is reconstituted in bacteriostatic water at the stated concentration and re-assayed at 0, 3 and 7 days at 2–8 °C; extra vial | PriceConfirm scope and pricing |
| Conformity, extra vials for lot variance | MethodIdentity, purity and net content repeated on 2 or more vials from the lot | Price+$75 per extra vial |
Build a current quote
Choose the compound and assays in the current intake for an itemized quote. View current pricing.
The base assay includes identity and purity. Compound-specific prices and selected add-ons are shown in the current intake before payment. Net peptide content is a separate $29 add-on, including for GLP-1 compounds. Expedited turnaround adds 50%; priority adds 100%.
What moves the price
- Compound class. GLP-1 analogs (semaglutide, tirzepatide, retatrutide, cagrilintide) are large, multiply charged and need longer gradients and dedicated reference standards, so identity and purity are $289 rather than $189. Blends price per component.
- Destructive add-ons. Endotoxin, sterility, heavy metals, residual solvents and TFA each consume a vial. Endotoxin and sterility share one.
- Conformity. Eligible conformity testing adds $75 per additional vial of the same SKU and is the only way to say anything about the lot rather than one vial.
- Turnaround. Standard is 5–7 business days. Expedited adds 50%, priority 100%. Sterility adds fourteen days of incubation at any tier.
- Volume. Discounts apply from 10 samples in one order, and group testing lets 2–50 people split one sample’s fee.
Published prices at other laboratories
| Laboratory | Identity and purity, published | Source |
|---|---|---|
| Janoshik Analytical | Identity and purity, publishedMost single-peptide tests $215 or $290; GLP-1 blind test $360; specialty peptides $450 (2026 menu). | Sourcelabowned.com menu snapshot, Jul 2026 |
| Freedom Diagnostics | Identity and purity, published$200 purity and ID plus $25 net peptide content, $225 combined. GLP-1 class priced the same. | SourceIntake form v4, May 2026 |
| Vanguard Laboratory | Identity and purity, publishedHPLC purity $250, quantity $250, identity $200 as separate line items; tiered packages $249–$700. | Sourcevanguardlaboratory.com; peptidecritic.com, 2026 |
| MZ Biolabs | Identity and purity, publishedHPLC-UV purity with mass-spectrometry identity; community-documented pricing $175–$350 per test, 4-sample monthly minimum for commercial clients. | Sourcepeptigrity.com, 2025–2026 |
| Chromate | Identity and purity, publishedRP-HPLC purity as the default; community pricing $100–$180; no published fee schedule. | Sourcethepeptidelist.com, Jan 2026; goldstandardanalytics.com/compare/chromate, Aug 2026 |
| ACS Peptide Testing Labs | Identity and purity, publishedHPLC purity from $150–$300; identity plus purity $400–$600. Exact price by quote. | Sourceacslabtest.com/blog, Feb 2026 |
| Horizon Analytical | Identity and purity, publishedPurity, ID and quantity $275 per sample; blends $400–$650. | Sourcehorizonanalytical.com/services, checked Sep 2026 |
| ZyntroTest | Identity and purity, published$200 per sample for LC-MS purity with "molecular identity confirmation". Net content not listed. | Sourcezyntrotest.com, checked Sep 2026 |
| Prodigy Labs | Identity and purity, publishedScreening $195: RP-HPLC purity with retention-time identity, no mass spec. Tier 1 $295 adds co-injection identity and content. MS identity is a $350 add-on per active. | Sourceprodigy-labs.com/peptide-testing-pricing, checked Sep 2026 |
| TrustPointe Analytics | Identity and purity, publishedPer-peptide assays: $200 (BPC-157, TB-500, ipamorelin), $300 (semaglutide, tirzepatide), $400 (retatrutide, cagrilintide, NAD+). Identity, potency and purity by HPLC; mass spectrometry not stated. Additional same-lot vials $80–$100. | Sourcetrustpointeanalytics.com/collections/peptide-testing, checked Sep 2026 |
| Bioviridian | Identity and purity, published$150 per sample for LC-MS purity, identity and net peptide content on an Agilent 1200 HPLC-DAD with LC-MS and MALDI-MS. | Sourcebioviridians.com; peptigrity.com, 2026 |
Taken from each laboratory’s own site or a named public source, checked September 9, 2026. Full comparisons on the compare page.
What is included at every price
Every sample is opened on camera, photographed, blind-coded and tracked on one accession. The certificate is public by accession number, carries a SHA-256 hash and prints the chromatogram, method, instrument ID and specification for each result. Custody video is kept three years and the retained sample 90 days, which is what makes the guarantee checkable: miss the quoted turnaround, or have an ISO/IEC 17025-accredited laboratory materially contradict us on a retest of the retained sample, and the panel fee is refunded.
Questions
Why is GLP-1 testing more expensive?
Semaglutide, tirzepatide and their analogs are 30 to 40 residues long with lipid side chains, so they need longer gradients, dedicated certified reference standards and more instrument time for the multiply charged identity work. Net peptide content is a separate $29 add-on.
Is there a cheaper way to test one vial?
Group testing. Two to fifty people split one sample’s fee and every contributor gets the same signed certificate. The peptide base assay includes identity and purity; the current intake shows available add-ons.
Do you charge for the shipping label?
No. A prepaid UPS Ground label is emailed when payment lands. Expedited shipping is available at cost.
Are there hidden fees?
No. The quote in the intake builder is the invoice total. Sales tax applies where required by law and is shown before payment.
Can a vendor pay for a customer’s test?
Yes. Any account can pay for any accession, and the referral program pays 20% of a referred customer’s first order to the referrer.
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Submit a sample
An invoice is issued at submission and the prepaid label is emailed when payment lands.