Is Tirzepatide third-party tested?

Yes. Every Tirzepatide lot runs a 7-point QC panel at an independent third-party US lab: identity, purity by HPLC, quantity, sterility, endotoxins by LAL, heavy metals by ICP-MS and a fentanyl screen, at 99.72% purity. The signed certificate for the exact lot you receive is published before you order. The signed certificate of analysis for the exact lot you receive is published on the lab reports page and available before you order.

How do I verify my Tirzepatide is legit?

Match the lot number printed on your vial to the certificate of analysis published on the Next Level Labs lab reports page. It names the lab, batch, purity, and identity confirmation for that exact lot, so a real report always maps to your specific vial.

Research-grade · Lyophilized powder

GLP-2 TZ

Name: GLP-2 TZ
Brand: Next Level Labs
SKU: TIRZ
Price: 79.99 USD
Availability: InStock

$79.99

Tirzepatide dual GIP/GLP-1 receptor agonist, lyophilized, for in vitro study.

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Category: Peptides

Order within — to ship today

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Purity99.72%

FormLyophilized

Dispatch1-2 day

COA on file
7-point QC panel
Heavy metals · ICP-MS
Fentanyl screened
Sterility + endotoxins
Same-day dispatch
Free shipping over $200
In stock, ships today
Discreet packaging

View certificate of analysis →

Third-party testedHPLC + LC-MS purity

Lyophilized & stableSealed, no cold chain

Same-day dispatchDiscreet, tracked shipping

COA on filePublished before listing

01 — Description

What it is

Tirzepatide is a synthetic dual agonist at the glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors. It is used in incretin-signaling and receptor-binding research.

Supplied as a lyophilized powder and sealed against light and moisture. Every lot is independently assayed and the certificate is published before the compound is listed. Strictly for in vitro laboratory research.

02 — Details

Specifications

FormLyophilized powder

Purity99.72% (HPLC verified)

Presentation10mg single vial

StorageStore lyophilized, protect from light

For research use only. Not for human or veterinary use. Not a drug, food, or supplement.

03 — Certificate of analysis

Tested before it's listed

Certificate of AnalysisLot PS07-T210

CompoundGLP-2 TZ

Assay (HPLC)99.72%

Identity (MS)Confirmed

Content found10.42 mg vs 10 mg labeled

LabILS Laboratories

DatedAug 11, 2026

View signed certificate →

FAQ

Tirzepatide, answered.

Is Tirzepatide for human use? +

No. Tirzepatide is a research compound for in vitro laboratory use only. It is not a drug, food or supplement, and it is not approved by the FDA for human or veterinary use.

How should Tirzepatide be stored? +

Store the vial lyophilized, sealed and protected from light. No cold chain is required for shipping.

How fast does Tirzepatide ship? +

Orders paid before 5pm ET on a business day dispatch the same day, tracked and discreetly packaged. After 5pm, or at a weekend, they go out the next business day.

GLP-2 TZ

What it is

Specifications

Tested before it's listed

Tirzepatide, answered.

Pairs well at the bench