TB-500 Peptide for Sale | Compare Brands and Lab Reports

How to choose

Which TB-500 is right for your research?

Every brand is compared on the same points, using the information each brand publishes. Pick the one that fits how you work.

Compare on Information each brand publishes

Viora Our pick: recommended

Divine Steel Peptides

Trynity Peptides Lowest entry price

Who it's for

Best for

Researchers who want a lab report for every lot

Larger vial sizes, including Tesamorelin 20 mg

A low cost first order

Lab testing

Third-party lab report

Published, tested by Lighthouse Analytical

Coming soon

Purity on latest lot

98.1%

Coming soon

Other tests on the report

Content, Endotoxin

Coming soon

Price

Vial sizes

10 mg

5 mg

Price per vial

$66

$70

$30

Lowest price per mg

$5.61 (10 mg, 5 vials)

$5.95 (10 mg, 5 vials)

$5.10 (5 mg, 5 vials)

Shipping and returns

Dispatch

Not published yet

Shipping cost

$7.95 for Standard, free over $150

Returns

30 days on unopened vials

Damage claims within 48 hours

Prices from each brand, 24 Oct 2026

Choose Viora, $66

Choose Divine Steel, $70

Choose Trynity, $30

Viora Our pick

Best for: Researchers who want a lab report for every lot
Third-party lab report: Published, tested by Lighthouse Analytical
Purity on latest lot: 98.1%
Other tests on the report: Content, Endotoxin
Vial sizes: 10 mg
Price per vial: $66
Lowest price per mg: $5.61 (10 mg, 5 vials)
Dispatch: Not published yet
Shipping cost: $7.95 for Standard, free over $150
Returns: 30 days on unopened vials

Choose Viora

Divine Steel Peptides

Best for: Larger vial sizes, including Tesamorelin 20 mg
Third-party lab report: Published, tested by Lighthouse Analytical
Purity on latest lot: 98.1%
Other tests on the report: Content, Endotoxin
Vial sizes: 10 mg
Price per vial: $70
Lowest price per mg: $5.95 (10 mg, 5 vials)
Dispatch: Not published yet
Shipping cost: $7.95 for Standard, free over $150
Returns: 30 days on unopened vials

Choose Divine Steel Peptides

Trynity Peptides Lowest entry price

Best for: A low cost first order
Third-party lab report: Coming soon
Purity on latest lot: Coming soon
Other tests on the report: Coming soon
Vial sizes: 5 mg
Price per vial: $30
Lowest price per mg: $5.10 (5 mg, 5 vials)
Dispatch: Not published yet
Shipping cost: $7.95 for Standard, free over $150
Returns: Damage claims within 48 hours

Choose Trynity Peptides

Our recommendation

Viora

Viora is made and shipped in the USA, with a published lab report for the lot on your vial. Trynity costs less per order. Bought in 5 vial bundles, Trynity works out cheaper per mg ($5.10 vs $5.61).

Source: each brand's website, checked 24 Oct 2026. “Not published yet” means the brand has not made that information public.

Lab report

TB-500 test results, matched to the lot

Viora, lot VIO-TB-260831. Tested by Lighthouse Analytical, an independent laboratory, in 1 report dated 16 Sep 2026.

Purity

Reported

98.1%

UHPLC/UV, specification 98.0% or higher · #LH1-0000007

View report #LH1-0000007

Content

Reported

13.0 mg

Assay, labelled 10 mg · #LH1-0000007

View report #LH1-0000007

Endotoxin

Reported

1.00 EU/mg

LAL · #LH1-0000007

View report #LH1-0000007

View full lab report

Divine Steel Peptides: lot DSP-TB-260831, 98.1% purity, Lighthouse Analytical. View report

Trynity Peptides lab report for TB-500: coming soon. It will appear here when it is uploaded.

TB-500 research guide · Updated 24 Oct 2026

What is TB-500?

TB-500 is the research name used for synthetic thymosin beta-4, a 43 amino acid peptide first isolated from the thymus. The TB-500 listed here uses the thymosin beta-4 CAS number (77591-33-4), and its lab report identifies the vial content as TB4. Some suppliers use the name TB-500 for a shorter synthetic fragment of thymosin beta-4 instead, so check the CAS number on each listing. It is supplied as a lyophilized powder for in vitro and preclinical laboratory research only.

Full specifications

Sequence: Ac-Ser Asp Lys Pro Asp Met Ala Glu Ile Glu Lys Phe Asp Lys Ser Lys Leu Lys Lys Thr Glu Thr Gln Glu Lys Asn Pro Leu Pro Ser Lys Glu Thr Ile Glu Gln Glu Lys Gln Ala Gly Glu Ser
Length: 43 amino acids (thymosin beta-4)
CAS number: 77591-33-4
Molecular formula: C212H350N56O78S
Molecular weight: 4963.4 g/mol
Form: Lyophilized powder in a glass vial
Purity standard: 98% or higher (brand listing)
Storage: Minus 20 °C long term. 2 to 8 °C once reconstituted, use within 30 days.

How TB-500 is tested

A good TB-500 listing comes with a lab report for the exact lot in the vial. These are the results to look for:

Purity (HPLC)
How much of the sample is the compound
Identity (MS or LCMS)
Confirms it is the right molecule
Net content
The real mg in the vial versus the label
Endotoxin (LAL)
Bacterial residue, reported in EU
Sterility
Confirms nothing is growing in the vial
Heavy metals (ICP-MS)
Arsenic, cadmium, lead and mercury

Storage and handling

Lyophilized TB-500 is stable at room temperature while it ships. For long term storage keep vials at minus 20 °C. Once reconstituted for laboratory use, store at 2 to 8 °C and use within 30 days.

TB-500 vs BPC-157

TB-500 and BPC-157 are different peptides that are often studied side by side. TB-500 (thymosin beta-4) has 43 amino acids. BPC-157 is a 15 amino acid fragment of a protein first found in gastric juice. Both are sold here on their own and together as a 20 mg blend.

Compound BPC-157 Lab reports and price per mg by brand Read more → Blend BPC-157 + TB-500 Lab reports and price per mg by brand Read more →

Where to buy TB-500

Online Peptide Market shows every brand that sells TB-500 on one page, so you can compare lab reports, price per mg and shipping before you buy. Trynity Peptides offers a 5 mg vial. Viora offers a 10 mg vial with a published Lighthouse Analytical report. Divine Steel Peptides offers a 10 mg vial with a published Lighthouse Analytical report. Buy 3 vials to save 10%, or 5 vials to save 15%.

Questions and answers

TB-500 questions, answered

Where can I buy TB-500?

Right here. Online Peptide Market lists every brand's TB-500 on one page: Trynity Peptides (5 mg for $30), Viora (10 mg for $66) and Divine Steel Peptides (10 mg for $70). Compare lab reports, price per mg and shipping, then check out in one cart.

Is the TB-500 third-party tested?

Viora's TB-500, lot VIO-TB-260831, was tested by Lighthouse Analytical: 98.1% purity by UHPLC/UV, 13.0 mg measured in a 10 mg vial and endotoxin 1.00 EU/mg. Divine Steel Peptides' TB-500, lot DSP-TB-260831, was tested by Lighthouse Analytical: 98.1% purity by UHPLC/UV, 13.0 mg measured in a 10 mg vial and endotoxin 1.00 EU/mg. Trynity Peptides' report is coming soon.

What is the difference between TB-500 and BPC-157?

They are different peptides. TB-500 is thymosin beta-4, 43 amino acids long (CAS 77591-33-4). BPC-157 is a 15 amino acid peptide (CAS 137525-51-0). Both are sold here on their own, and as a 20 mg BPC-157 and TB-500 blend.

Do you offer bulk discounts on TB-500?

Yes. Buy 3 vials and save 10%, or 5 vials and save 15%. A 5 vial bundle of Trynity Peptides 5 mg works out to $5.10 per mg, the lowest price per mg on the page.

How should TB-500 be stored?

Keep lyophilized vials at minus 20 °C for long term storage. They are stable at room temperature while shipping. Once reconstituted for lab use, store at 2 to 8 °C and use within 30 days.

What does research use only mean?

Products are sold only for in vitro laboratory research. They are not drugs, supplements or cosmetics, are not FDA approved, and are not for human or veterinary use. Buyers must be 21 or older.

Often compared with TB-500