Synthetic fragment of Thymosin Beta-4 active site. Studied for actin sequestration, cell migration, and tissue repair. Merit Verified tracks independent COA test results for TB-500 from multiple vendors.

Which vendors sell TB-500 with independent COA testing?

31 vendors in the Merit Verified directory have independent COA evidence on file for TB-500 — 211 COAs total. COA coverage and test dates are listed on the TB-500 page at https://meritverified.org/peptides/tb-500.

How do I verify the quality of TB-500 from a vendor?

To verify TB-500 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 TB-500 at https://meritverified.org/peptides/tb-500 so you can compare evidence across vendors before buying.

What is the regulatory status of TB-500?

TB-500 is classified as research-use only in the Merit Verified registry. In the United States, the FDA removed several peptides including BPC-157, TB-500, and GLP-1 analogues from the 503A compounding ingredient list in April 2026, restricting their use in compounded drugs for human administration. Vendors selling TB-500 for research purposes are not selling it as a drug or supplement; the legal status of purchasing for personal use varies by jurisdiction. Merit Verified does not provide legal or medical advice — confirm current regulatory status with a licensed professional.

Healing & Recovery

TB-500

Also known as: Thymosin Beta-4 fragment, TB4 fragment

Research use only · not FDA-approved research only

Synthetic fragment of Thymosin Beta-4 active site. Studied for actin sequestration, cell migration, and tissue repair.

Common research uses

soft tissue injury recovery (research only)wound healing studies

Real-time market data

Pricing for TB-500

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

$7.34/mg

range $1.20–$23.00/mg

Sellers

from $0.00

45-day trend

-10.7%

vs 45-day avg $/mg

73 of 82 sellers have a current price· 45 stale listings hidden (not seen in 7 days)

	Vendor	Price	$/mg	vs avg	Purity	COAs	Merit
🇺🇸	Peptide Partners via Disclosed Labs · just now	$490· 100mg	$4.90/mg	-33.3%	99.8%	15	99
🇺🇸	Glacier Aminos ✓ verified at source · just now	$58.99· 10mg	$5.90/mg	-19.7%	99.9%	2	99
🇺🇸	Moglabs via Disclosed Labs · just now	$38.00· 5mg	$7.60/mg	+3.5%	99.2%	3	96
🇺🇸	BioLongevity Labs via Disclosed Labs · just now	$165· 10mg	$16.50/mg	+124.7%	99.8%	9	96	Buy code MERIT · 15% off
🇺🇸	Ion Peptide ✓ verified at source · just now	$29.00· 5mg	$5.80/mg	-21%	99.8%	15	95
🇺🇸	Orbitrex Peptides via Disclosed Labs · just now	$59.99· 10mg	$6.00/mg	-18.3%	99.5%	4	95
🇺🇸	Profound Aminos via Disclosed Labs · just now	$65.00· 10mg	$6.50/mg	-11.5%	99.2%	4	95	Buy
🇺🇸	Prime Peptides via Disclosed Labs · just now	$75.00· 10mg	$7.50/mg	+2.1%	99.5%	3	95	Buy
🇺🇸	Licensed Peptides ✓ verified at source · just now	$99.99· 10mg	$10.00/mg	+36.2%	99.8%	1	95	Buy code MERIT · 5% off
🇺🇸	Forge Performance Co. via Disclosed Labs · just now	$60.00· 10mg	$6.00/mg	-18.3%	99.6%	3	94	Buy code MERIT · 10% off
🇺🇸	Hydro Research Peptides via Disclosed Labs · just now	$65.00· 10mg	$6.50/mg	-11.5%	99.3%	4	91	Buy code MERIT · 15% off
🇺🇸	Peptide Plugs ✓ verified at source · just now	$50.00· 10mg	$5.00/mg	-31.9%	99.9%	3	89	Buy
🇺🇸	Peptidology ✓ verified at source · just now	$56.99· 10mg	$5.70/mg	-22.4%	99.4%	4	89	Buy
🇺🇸	Verified Peptides via Disclosed Labs · just now	$62.00· 10mg	$6.20/mg	-15.6%	99.0%	57	86	Buy
🇺🇸	EZ Peptides ✓ verified at source · just now	$48.00· 10mg	$4.80/mg	-34.6%	99.9%	11	85
🇺🇸	Simple Peptide via Disclosed Labs · just now	$65.00· 10mg	$6.50/mg	-11.5%	99.5%	12	85	Buy
🇺🇸	Ascension Peptides via Disclosed Labs · just now	$54.00· 5mg	$10.80/mg	+47.1%	—	—	84	Buy affiliate
	Peptide Supply Co. via Disclosed Labs · just now	$340· 100mg	$3.40/mg	-53.7%	99.2%	1	83
🇺🇸	Blank Peptides ✓ verified at source · just now	$60.00· 10mg	$6.00/mg	-18.3%	99.1%	2	81
🇺🇸	OROS Research via Disclosed Labs · just now	$64.99· 10mg	$6.50/mg	-11.5%	99.0%	3	79
🇺🇸	Texpeptide ✓ verified at source · just now	$60.00· 10mg	$6.00/mg	-18.3%	99.4%	2	65	Buy
🇺🇸	Certified Peptides ✓ verified at source · just now	$70.00· 10mg	$7.00/mg	-4.7%	—	1	62
🇺🇸	Alpha Peptides via Disclosed Labs · just now	$31.32· 10mg	$3.13/mg	-57.3%	—	—	Unscored
🇺🇸	NG Peptide via Disclosed Labs · just now	$64.00· 20mg	$3.20/mg	-56.4%	—	—	Unscored
	peptidetech.is via Disclosed Labs · just now	$54.99· 10mg	$5.50/mg	-25.1%	—	—	Unscored
	optimasupply.is via Disclosed Labs · just now	$65.00· 10mg	$6.50/mg	-11.5%	—	—	Unscored
🇺🇸	Arcane Peptides via Disclosed Labs · just now	$45.00· 5mg	$9.00/mg	+22.6%	—	—	Unscored
	realpeptides.co via Disclosed Labs · just now	$100· 10mg	$10.00/mg	+36.2%	—	—	Unscored

Top Merit pick

🇺🇸 Peptide Partners
via Disclosed Labs · just now
99

$4.90/mg -33.3% vs avg

$490

100mg

99.8% purity 15 COAs
🇺🇸 Glacier Aminos
✓ verified at source · just now
99

$5.90/mg -19.7% vs avg

$58.99

10mg

99.9% purity 2 COAs
🇺🇸 Moglabs
via Disclosed Labs · just now
96

$7.60/mg +3.5% vs avg

$38.00

5mg

99.2% purity 3 COAs
🇺🇸 BioLongevity Labs
via Disclosed Labs · just now
96

$16.50/mg +124.7% vs avg

$165

10mg

99.8% purity 9 COAs

Buy code MERIT · 15% off
🇺🇸 Ion Peptide
✓ verified at source · just now
95

$5.80/mg -21% vs avg

$29.00

5mg

99.8% purity 15 COAs
🇺🇸 Orbitrex Peptides
via Disclosed Labs · just now
95

$6.00/mg -18.3% vs avg

$59.99

10mg

99.5% purity 4 COAs
🇺🇸 Profound Aminos
via Disclosed Labs · just now
95

$6.50/mg -11.5% vs avg

$65.00

10mg

99.2% purity 4 COAs

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

$7.50/mg +2.1% vs avg

$75.00

10mg

99.5% purity 3 COAs

Buy
🇺🇸 Licensed Peptides
✓ verified at source · just now
95

$10.00/mg +36.2% vs avg

$99.99

10mg

99.8% purity 1 COA

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

$6.00/mg -18.3% vs avg

$60.00

10mg

99.6% purity 3 COAs

Buy code MERIT · 10% off
🇺🇸 Hydro Research Peptides
via Disclosed Labs · just now
91

$6.50/mg -11.5% vs avg

$65.00

10mg

99.3% purity 4 COAs

Buy code MERIT · 15% off
🇺🇸 Peptide Plugs
✓ verified at source · just now
89

$5.00/mg -31.9% vs avg

$50.00

10mg

99.9% purity 3 COAs

Buy
🇺🇸 Peptidology
✓ verified at source · just now
89

$5.70/mg -22.4% vs avg

$56.99

10mg

99.4% purity 4 COAs

Buy
🇺🇸 Verified Peptides
via Disclosed Labs · just now
86

$6.20/mg -15.6% vs avg

$62.00

10mg

99.0% purity 57 COAs

Buy
🇺🇸 EZ Peptides
✓ verified at source · just now
85

$4.80/mg -34.6% vs avg

$48.00

10mg

99.9% purity 11 COAs
🇺🇸 Simple Peptide
via Disclosed Labs · just now
85

$6.50/mg -11.5% vs avg

$65.00

10mg

99.5% purity 12 COAs

Buy
🇺🇸 Ascension Peptides
via Disclosed Labs · just now
84

$10.80/mg +47.1% vs avg

$54.00

5mg

no purity

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

$3.40/mg -53.7% vs avg

$340

100mg

99.2% purity 1 COA
🇺🇸 Blank Peptides
✓ verified at source · just now
81

$6.00/mg -18.3% vs avg

$60.00

10mg

99.1% purity 2 COAs
🇺🇸 OROS Research
via Disclosed Labs · just now
79

$6.50/mg -11.5% vs avg

$64.99

10mg

99.0% purity 3 COAs
🇺🇸 Texpeptide
✓ verified at source · just now
65

$6.00/mg -18.3% vs avg

$60.00

10mg

99.4% purity 2 COAs

Buy
🇺🇸 Certified Peptides
✓ verified at source · just now
62

$7.00/mg -4.7% vs avg

$70.00

10mg

no purity 1 COA
🇺🇸 Alpha Peptides
via Disclosed Labs · just now
Unscored

$3.13/mg -57.3% vs avg

$31.32

10mg

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

$3.20/mg -56.4% vs avg

$64.00

20mg

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

$5.50/mg -25.1% vs avg

$54.99

10mg

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

$6.50/mg -11.5% vs avg

$65.00

10mg

no purity
🇺🇸 Arcane Peptides
via Disclosed Labs · just now
Unscored

$9.00/mg +22.6% vs avg

$45.00

5mg

no purity
realpeptides.co
via Disclosed Labs · just now
Unscored

$10.00/mg +36.2% vs avg

$100

10mg

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 TB-500

211 third-party tests across 31 vendors. Each card links to the full report.

All 211 COAs for TB-500 →

Measured purity over time

TB-500

Pricing for TB-500

COAs for TB-500

15 citations indexed for TB-500

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