Which vendors sell Tirzepatide with independent COA testing?

41 vendors in the Merit Verified directory have independent COA evidence on file for Tirzepatide — 379 COAs total. COA coverage and test dates are listed on the Tirzepatide page at https://meritverified.org/peptides/tirzepatide.

How do I verify the quality of Tirzepatide from a vendor?

To verify Tirzepatide quality, look for an independent certificate of analysis (COA) from a third-party lab — not a lab the vendor owns or pays directly. The COA should state the tested compound, lot number, purity percentage (identity and concentration), and the lab's name. Cross-reference the lot number against the vendor's current stock. Merit Verified indexes COAs for Tirzepatide at https://meritverified.org/peptides/tirzepatide so you can compare evidence across vendors before buying.

What is the regulatory status of Tirzepatide?

Tirzepatide is tracked in the Merit Verified registry. Regulatory status for research peptides in the US has been evolving — the FDA has reclassified a number of peptides out of the 503A compounding ingredient list since 2025. Merit Verified does not provide legal or regulatory advice; check official FDA sources or consult a licensed professional for the current status of Tirzepatide in your jurisdiction.

GLP-1 / Metabolic

Tirzepatide

Also known as: Tirzepatide (GIP/GLP-1 dual receptor agonist — Mounjaro, Zepbound)

Tirzepatide is a unimolecular dual GIP and GLP-1 receptor agonist with a half-life of approximately 5 days, enabling once-weekly subcutaneous dosing. It is FDA-approved as Mounjaro for type 2 diabetes (2022), Zepbound for chronic weight management in adults with obesity or overweight with a weight-related comorbidity (2023), and Zepbound for moderate-to-severe obstructive sleep apnea in adults with obesity (2024). It carries a BOXED WARNING for thyroid C-cell tumors and is contraindicated in patients with a personal or family history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).

Real-time market data

Pricing for Tirzepatide

Live vendor pricing, normalized to $/mg so sizes compare fairly — fused with each seller's Merit trust score and latest independent COA purity. Prices refresh daily.

Average price

$6.89/mg

range $0.00–$93.33/mg

Sellers

from $0.00

45-day trend

+25.5%

vs 45-day avg $/mg

68 of 73 sellers have a current price· 48 stale listings hidden (not seen in 7 days)

	Vendor	Price	$/mg	vs avg	Purity	COAs	Merit
🇺🇸	Peptide Partners via Disclosed Labs · just now	$3090· 1200mg	$2.58/mg	-62.6%	99.1%	18	99	Buy
🇺🇸	Orbitrex Peptides via Disclosed Labs · just now	$200· 60mg	$3.33/mg	-51.6%	99.7%	15	95
🇺🇸	Profound Aminos via Disclosed Labs · just now	$186· 40mg	$4.65/mg	-32.5%	99.9%	57	95	Buy
🇺🇸	Prime Peptides via Disclosed Labs · just now	$280· 60mg	$4.67/mg	-32.3%	99.9%	6	95	Buy
🇺🇸	Licensed Peptides ✓ verified at source · 1d ago	$855· 30mg	$28.50/mg	+313.4%	—	—	95	Buy code MERIT · 5% off
🇺🇸	Forge Performance Co. via Disclosed Labs · just now	$100· 30mg	$3.33/mg	-51.6%	99.8%	2	94	Buy code MERIT · 10% off
🇺🇸	Riptide Wellness via Disclosed Labs · just now	$180· 60mg	$3.00/mg	-56.5%	—	—	92
🇺🇸	Sunrise Bioresearch via Disclosed Labs · just now	$63.40· 30mg	$2.11/mg	-69.3%	100.0%	2	88
🇺🇸	Simple Peptide via Disclosed Labs · just now	$425· 100mg	$4.25/mg	-38.3%	99.9%	42	85	Buy
	Peptide Supply Co. via Disclosed Labs · just now	$580· 600mg	$0.97/mg	-86%	99.6%	3	83	Buy
🇺🇸	Blank Peptides ✓ verified at source · just now	$120· 10mg	$12.00/mg	+74.1%	99.7%	2	81
🇺🇸	OROS Research via Disclosed Labs · just now	$140· 10mg	$14.00/mg	+103.1%	99.0%	2	79
🇺🇸	Texpeptide ✓ verified at source · 1d ago	$100· 15mg	$6.67/mg	-3.3%	99.8%	2	65	Buy
🇭🇰	Hkuppeptide ✓ verified at source · just now	$10.00· 20mg	$0.50/mg	-92.7%	99.8%	1	50
🇭🇰	zztai Peptide Ltd ✓ verified at source · just now	$280· 60mg	$4.67/mg	-32.3%	100.0%	1	43
🇺🇸	Alpha Peptides via Disclosed Labs · just now	$84.99· 60mg	$1.42/mg	-79.5%	—	—	Unscored
	peptidetech.is via Disclosed Labs · just now	$300· 120mg	$2.50/mg	-63.7%	—	—	Unscored
	volterasciences.com via Disclosed Labs · just now	$160· 60mg	$2.67/mg	-61.3%	—	—	Unscored
	optimasupply.is via Disclosed Labs · just now	$430· 100mg	$4.30/mg	-37.6%	—	—	Unscored
🇺🇸	NG Peptide via Disclosed Labs · just now	$580· 60mg	$9.67/mg	+40.2%	—	—	Unscored

Top Merit pick

🇺🇸 Peptide Partners
via Disclosed Labs · just now
99

$2.58/mg -62.6% vs avg

$3090

1200mg

99.1% purity 18 COAs

Buy
🇺🇸 Orbitrex Peptides
via Disclosed Labs · just now
95

$3.33/mg -51.6% vs avg

$200

60mg

99.7% purity 15 COAs
🇺🇸 Profound Aminos
via Disclosed Labs · just now
95

$4.65/mg -32.5% vs avg

$186

40mg

99.9% purity 57 COAs

Buy
🇺🇸 Prime Peptides
via Disclosed Labs · just now
95

$4.67/mg -32.3% vs avg

$280

60mg

99.9% purity 6 COAs

Buy
🇺🇸 Licensed Peptides
✓ verified at source · 1d ago
95

$28.50/mg +313.4% vs avg

$855

30mg

no purity

Buy code MERIT · 5% off
🇺🇸 Forge Performance Co.
via Disclosed Labs · just now
94

$3.33/mg -51.6% vs avg

$100

30mg

99.8% purity 2 COAs

Buy code MERIT · 10% off
🇺🇸 Riptide Wellness
via Disclosed Labs · just now
92

$3.00/mg -56.5% vs avg

$180

60mg

no purity
🇺🇸 Sunrise Bioresearch
via Disclosed Labs · just now
88

$2.11/mg -69.3% vs avg

$63.40

30mg

100.0% purity 2 COAs
🇺🇸 Simple Peptide
via Disclosed Labs · just now
85

$4.25/mg -38.3% vs avg

$425

100mg

99.9% purity 42 COAs

Buy
Peptide Supply Co.
via Disclosed Labs · just now
83

$0.97/mg -86% vs avg

$580

600mg

99.6% purity 3 COAs

Buy
🇺🇸 Blank Peptides
✓ verified at source · just now
81

$12.00/mg +74.1% vs avg

$120

10mg

99.7% purity 2 COAs
🇺🇸 OROS Research
via Disclosed Labs · just now
79

$14.00/mg +103.1% vs avg

$140

10mg

99.0% purity 2 COAs
🇺🇸 Texpeptide
✓ verified at source · 1d ago
65

$6.67/mg -3.3% vs avg

$100

15mg

99.8% purity 2 COAs

Buy
🇭🇰 Hkuppeptide
✓ verified at source · just now
50

$0.50/mg -92.7% vs avg

$10.00

20mg

99.8% purity 1 COA
🇭🇰 zztai Peptide Ltd
✓ verified at source · just now
43

$4.67/mg -32.3% vs avg

$280

60mg

100.0% purity 1 COA
🇺🇸 Alpha Peptides
via Disclosed Labs · just now
Unscored

$1.42/mg -79.5% vs avg

$84.99

60mg

no purity
peptidetech.is
via Disclosed Labs · just now
Unscored

$2.50/mg -63.7% vs avg

$300

120mg

no purity
volterasciences.com
via Disclosed Labs · just now
Unscored

$2.67/mg -61.3% vs avg

$160

60mg

no purity
optimasupply.is
via Disclosed Labs · just now
Unscored

$4.30/mg -37.6% vs avg

$430

100mg

no purity
🇺🇸 NG Peptide
via Disclosed Labs · just now
Unscored

$9.67/mg +40.2% vs avg

$580

60mg

no purity

Prices observed from public storefronts (last 24h), normalized to $/mg. "Evidence" is Merit's 0–100 Merit Score, derived only from observable verification evidence (methodology on /about); "Purity" is the latest independent COA. Some buy links are affiliate links — Merit may earn a commission at no extra cost to you, and where a vendor offers one, the code shown gets you a discount at their checkout. Affiliate status never affects price data, ranking, or the Merit Score (full policy on /disclosure). Research use only.

Independent evidence

COAs for Tirzepatide

379 third-party tests across 41 vendors. Each card links to the full report.

All 379 COAs for Tirzepatide →

Measured purity over time

Tirzepatide

Pricing for Tirzepatide

COAs for Tirzepatide

23 citations indexed for Tirzepatide

Real-World Comparative Effectiveness of Tirzepatide and Semaglutide for Obesity: A Multicentered Study

Tirzepatide as a multi-organ integrator in metabolic diseases: a review of molecular mechanisms and clinical translation

Starvation-Type Euglycemic Ketoacidosis After Unsupervised Tirzepatide Use in a Non-Obese, Non-Diabetic Woman

Impact of tirzepatide on systemic arterial stiffness assessed by cardio-ankle vascular index in individuals with obesity complicated by type 2 diabetes: A retrospective cohort study in Japan

Tirzepatide Regulates Pacemaker Function by Modulating cAMP and Calcium Dynamics in Human Sinoatrial Node Cells

Efficacy of tirzepatide versus SGLT2 inhibitors in metabolic dysfunction-associated steatotic liver disease (MASLD): a multicenter propensity-matched real-world study