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TB-500 (Thymosin Beta-4) 10-mg / owsa-tb5-10mg
Product analysis · Owsa Labs

TB-500 (Thymosin Beta-4) 10-mg / owsa-tb5-10mg

10 mg per vial of TB-500 (Thymosin Beta-4), sold by Owsa Labs. An analytical report is on file from Janoshik Analytical, showing 99.73% purity. For laboratory research use only.

Why this score?
Testing & analytical evidence
38/45
Value
18/25
Product identity
11/15
Supplier transparency
3/10
Label & listing transparency
5/5
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing transparency: 38/45
£36.99Owsa Labs
10 mgVial size
1Vials per pack
£36.99Price / vial
£3.70Price / mg
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We may earn a commission from qualifying purchases. This never affects our scores. Research-use product only - not for human or veterinary use.

The score, explained

Our scoring methodology
Testing & analytical evidence84/100
38 of 45 points
Value74/100
18.4 of 25 points
Product identity73/100
11 of 15 points
Supplier transparency25/100
2.5 of 10 points
Label & listing transparency100/100
5 of 5 points

Overall: 74.9/100 - Good. The score compares the documentation and characteristics of this research product - not whether a peptide is safe, effective or suitable for human use. Affiliate commission contributes no points.

Testing & evidence

Verified independent evidence

Evidence status
Verified independent evidence
Manufacturer statement
"Certificate of analysis on every product"; "Independent reports are published as we receive them"; "We hold 1 laboratory report for this compound"; "Testing by Janoshik Analytical, covering peptide content and purity."
Laboratory
Janoshik Analytical
Certification body
Not recorded
Batch
BT10/202602
Batch-specific report
Recorded
Report date
2026-02-16
Evidence checked
2026-09-21
Purity (HPLC)
99.73%
Chromatogram
Not shown
Identity / mass spectrometry
Not shown
Measured content
Within 18% of label
Lab verification
Can be verified with the laboratory
Microbiology / endotoxin
Not shown

Found a matching third-party COA for TB-500 (Thymosin Beta-4) 10 mg. The report shows 99.730{a48505b7a92a5d64fa947b6701e2877576ce853b374f7be6d82c62f5ee4ca6d5} purity and 11.79 mg measured content, but no chromatogram or MS details are visible on the report image.

Dose & value

Vial size
10 mg
Vials per pack
1 (single vial)
Pack price
£36.99
Price per vial
£36.99
Price per mg
£3.70
Compared with other suppliers
In line with the median (13 suppliers, same peptide)
Price last checked
21 Sep 2026

TB-500 product details

Compound
TB-500
Supplier product name
TB-500 (Thymosin Beta-4)
Supplier product code (SKU)
OWSA-TB5-10MG
CAS number
Not disclosed
Presentation
Vial
Storage
Not disclosed
Supplier purity claim
Not disclosed

Listing details describe the supplier's own product page; they do not independently verify the contents of any vial. Check the current listing and the batch covered by any test report.

Supplier transparency

Supplier
Owsa Labs
Legal company
Owsa Labs
Companies House verified
Not found
UK address disclosed
Not found
Contact details
Yes
Shipping policy
Yes
Returns policy
Yes
Batch / testing process explained
Yes

View the full supplier profile →

Compare all TB-500 suppliers →

What the record makes clear

  • An analytical report was located for this listing.
  • The report is for batch BT10/202602 - confirm it matches the vial you receive.
  • Price per mg can be calculated from the labelled vial size.

What to keep in mind

  • Research use only. A score is not an endorsement, and does not mean a product is safe, sterile, effective or suitable for human or veterinary use.
  • One tested sample does not guarantee every vial is identical.

Explore the alternatives

Compare alternative

TB-500 10mgAscend Peptides UK

Why this score?
Testing & analytical evidence
37/45
Value
21/25
Product identity
13/15
Supplier transparency
10/10
Label & listing transparency
5/5
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Quantity
10 mg / vial
Testing evidence
Evidence status
Verified independent evidence
Manufacturer statement
Every batch is ≥98% HPLC-verified and independently tested by Janoshik. Batch-specific Certificates of Analysis (COAs) are available before every purchase. HPLC Purity & LC-MS Identity Verified.
Laboratory
Janoshik Analytical
Certification body
Not recorded
Batch
20260114
Batch-specific report
Recorded
Report date
2026-04-14
Evidence checked
2026-09-21
£3.00per mg
£29.99per pack
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Product & testing details
Supplier
Ascend Peptides UK
Vials per pack
1
Price per vial
£29.99
Listing last checked
2026-09-21 17:26:44
Evidence status
Verified independent evidence
Manufacturer statement
Every batch is ≥98% HPLC-verified and independently tested by Janoshik. Batch-specific Certificates of Analysis (COAs) are available before every purchase. HPLC Purity & LC-MS Identity Verified.
Laboratory
Janoshik Analytical
Certification body
Not recorded
Batch
20260114
Batch-specific report
Recorded
Report date
2026-04-14
Evidence checked
2026-09-21

TB-500 10mg

Ascend Peptides UK
Why this score?
Testing & analytical evidence
37/45
Value
21/25
Product identity
13/15
Supplier transparency
10/10
Label & listing transparency
5/5
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Verified independent evidence
Manufacturer statement
Every batch is ≥98% HPLC-verified and independently tested by Janoshik. Batch-specific Certificates of Analysis (COAs) are available before every purchase. HPLC Purity & LC-MS Identity Verified.
Laboratory
Janoshik Analytical
Certification body
Not recorded
Batch
20260114
Batch-specific report
Recorded
Report date
2026-04-14
Evidence checked
2026-09-21
£3.00per mg
£29.99per pack
View AnalysisBuy Now

Compare alternative

TB-500 10mgReta Research

Why this score?
Testing & analytical evidence
12/45
Value
24/25
Product identity
12/15
Supplier transparency
10/10
Label & listing transparency
5/5
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Quantity
10 mg / vial
Testing evidence
Evidence status
Testing claimed
Manufacturer statement
Lyophilised powder, 10mg vial, ≥99% purity by HPLC, Certificate of Analysis on request. UK-based dispatch for preclinical research only.
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-20
£2.50per mg
£25.00per pack
View AnalysisBuy Now
Product & testing details
Supplier
Reta Research
Vials per pack
1
Price per vial
£25.00
Listing last checked
2026-09-20 09:20:11
Evidence status
Testing claimed
Manufacturer statement
Lyophilised powder, 10mg vial, ≥99% purity by HPLC, Certificate of Analysis on request. UK-based dispatch for preclinical research only.
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-20

TB-500 10mg

Reta Research
Why this score?
Testing & analytical evidence
12/45
Value
24/25
Product identity
12/15
Supplier transparency
10/10
Label & listing transparency
5/5
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Testing claimed
Manufacturer statement
Lyophilised powder, 10mg vial, ≥99% purity by HPLC, Certificate of Analysis on request. UK-based dispatch for preclinical research only.
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-20
£2.50per mg
£25.00per pack
View AnalysisBuy Now

Compare alternative

TB-500 5mgUK Peptides (ukpeptides.org)

Why this score?
Testing & analytical evidence
38/45
Value
15/25
Product identity
11/15
Supplier transparency
10/10
Label & listing transparency
5/5
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Quantity
5 mg / vial
Testing evidence
Evidence status
Manufacturer COA
Manufacturer statement
Independent third-party laboratory report for batch UKP-TB500-2511 of TB-500 5mg, issued by an accredited independent laboratory using HPLC-UV + Mass Spectrometry. Result: ≥98% HPLC.
Laboratory
Not recorded
Certification body
Not recorded
Batch
UKP-TB500-2511
Batch-specific report
Recorded
Report date
2025-11-25
Evidence checked
2026-09-20
£4.80per mg
£23.99per pack
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Product & testing details
Supplier
UK Peptides (ukpeptides.org)
Vials per pack
1
Price per vial
£23.99
Listing last checked
2026-09-20 09:20:11
Evidence status
Manufacturer COA
Manufacturer statement
Independent third-party laboratory report for batch UKP-TB500-2511 of TB-500 5mg, issued by an accredited independent laboratory using HPLC-UV + Mass Spectrometry. Result: ≥98% HPLC.
Laboratory
Not recorded
Certification body
Not recorded
Batch
UKP-TB500-2511
Batch-specific report
Recorded
Report date
2025-11-25
Evidence checked
2026-09-20

TB-500 5mg

UK Peptides (ukpeptides.org)
Why this score?
Testing & analytical evidence
38/45
Value
15/25
Product identity
11/15
Supplier transparency
10/10
Label & listing transparency
5/5
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Manufacturer COA
Manufacturer statement
Independent third-party laboratory report for batch UKP-TB500-2511 of TB-500 5mg, issued by an accredited independent laboratory using HPLC-UV + Mass Spectrometry. Result: ≥98% HPLC.
Laboratory
Not recorded
Certification body
Not recorded
Batch
UKP-TB500-2511
Batch-specific report
Recorded
Report date
2025-11-25
Evidence checked
2026-09-20
£4.80per mg
£23.99per pack
View AnalysisBuy Now