TB-500 Vial 10 mg Lot TB5-10-001: Certificate of Analysis (COA)
Peptira · tested Jul 16, 2025 by Janoshik · Older lot
This page summarizes the third-party lab report for lot TB5-10-001 of TB-500 Vial 10 mg sold by Peptira. The lot number on this page should match the lot printed on the vial label. Don't rely on this summary alone: use the button to open the lab's own record and compare the lot, date and results.
TB-500 Vial 10 mg lot TB5-10-001 test results, explained
Every result printed on this certificate, as reported by Janoshik, with a plain-English note on what the test measures. "Pass" and "specification" wording comes from the certificate; where the lab prints no pass/fail, we say so.
| Test | Result on the certificate | What it measures | This lot |
|---|---|---|---|
| HPLC purity | 99.863% | HPLC separates the sample into its components; purity is the share of the detected signal that sits in the main peak. On its own it doesn't show which molecule that peak is. That's what the identity test is for. | No pass/fail printed; reported value at or above 98% |
| Identity | Not reported | This certificate doesn't report an identity test, so it doesn't confirm which molecule is in the vial. Purity and quantity alone can't tell you that. | Not tested on this certificate |
| Quantity (measured content) | TB-500 (TB-4) 10.34 mg | How much peptide the lab measured in the vial, compared with the amount printed on the label. | Reported |
Lot and report details
| Lot / batch number | TB5-10-001 |
|---|---|
| Product (as labeled by vendor) | TB-500 Vial 10 mg |
| Labeled vial size | 10 mg |
| Testing laboratory | Janoshik |
| Tests requested | Assessment of a peptide vial or vials |
| Testing ordered | Jul 9, 2025 |
| Sample received by lab | Jul 14, 2025 |
| Report date | Jul 16, 2025 |
| Task number + unique key | Task #71152, key JDENM1KVM4DH |
| Lab-record check | Not checked automatically. Open the lab's record to compare. |
| Vendor | Peptira |
| Verify | Open Janoshik's record ↗ |
Data notes: Vendor table date 2025-07-14 differs from the certificate's analysis date 2025-07-16.
The certificate itself
About Janoshik
An independent analytical lab based in Prague, Czech Republic (Janoshik s.r.o.). Each report carries a task number and a unique verification key.
Accreditation: No accreditation is printed on these reports, and we found no published ISO/IEC 17025 accreditation for the lab (checked Oct 7, 2026).
Tests: On the reports here: HPLC purity and the measured content per vial. Other tests appear only when they're listed under Results.
How to verify: Go to janoshik.com/verify and enter the unique key printed on the report (the report's QR code links there too). Janoshik blocks automated checks, so we haven't matched these records ourselves.
Open Janoshik's record ↗Lab info from: janoshik.com · checked Oct 7, 2026.
Compound reference: TB-500 (thymosin beta-4)
- Also called
- TB-500; thymosin beta-4 fragment Ac-LKKTETQ; thymosin β4 (Tβ4)
- Sequence
- Ac-LKKTETQ (7 residues)
- Formula
- C38H68N10O14
- Mol. weight
- 889.0 g/mol
- CAS
- 885340-08-9
- Source
- PubChem CID 62707662 ↗
"TB-500" is used both for the 7-residue fragment Ac-LKKTETQ (PubChem's TB-500 record, shown here) and, on many vendor COAs, for full-length thymosin beta-4 (43 residues, PubChem CID 45382195). Check which molecule the identity line on a lot's COA names. Reference data only; it describes the molecule, not any use of it. For laboratory research use only.
TB-500 (thymosin beta-4) research profile · Where to get lab-tested TB-500 (thymosin beta-4)
TB-500 Vial 10 mg lot history at Peptira
All 5 certificates we have for this product from Peptira, newest first. The chart plots HPLC purity by report date (lots without a purity figure are left out). This lot is highlighted.
| Lot | Report date | Lab | HPLC purity |
|---|---|---|---|
| TB5-10-005 | Apr 16, 2026 | Freedom Diagnostics | 99.25% |
| TB5-10-004 | Dec 18, 2025 | Freedom Diagnostics | 99.30% |
| TB5-10-003 | Nov 20, 2025 | Freedom Diagnostics | 99.44% |
| TB5-1-002 | Aug 13, 2025 | Janoshik | 99.94% |
| TB5-10-001 | Jul 16, 2025 | Janoshik | 99.86% |
Also available from Paramount Peptides
TB-500 (thymosin beta-4) is also carried by Paramount Peptides, our other tested supplier. These are the most recent TB-500 (thymosin beta-4) certificates we have from them; each links to its own lot page.
| Product | Lot | Report date | Lab | HPLC purity |
|---|---|---|---|---|
| Thymosin Beta 4 (TB500) (10mg) | 26VTBC164 | Jul 8, 2026 | Accumark Labs | 99.12% |
| Thymosin Beta 4 (TB500) (10mg) | TB10-12222025-J | Jul 6, 2026 | Accumark Labs | 99.81% |
| Thymosin Beta 4 (TB500) (20mg) | 26VTBC110 | May 15, 2026 | Accumark Labs | 99.39% |
| Thymosin Beta 4 (TB500) (20mg) | 26VTBL068 | May 7, 2026 | Accumark Labs | 99.62% |
| Thymosin Beta 4 (TB500) (20mg) | 26VTBLO68 | Apr 17, 2026 | Janoshik | 99.46% |
Where to get lab-tested TB-500 (thymosin beta-4): products, sizes and latest COAs →
What to check on your vial
- The lot number on the vial label reads TB5-10-001, character for character.
- The product name and vial size on the label match TB-500 Vial 10 mg (10 mg).
- The lab's own record (www.janoshik.com, code Task #71152, key JDENM1KVM4DH) shows the same lot, report date (Jul 16, 2025) and results as this page.
- The report date is a date you'd expect for your purchase: a much older certificate may belong to an earlier lot.
- The identity line names the compound you expect. If it's "Not reported", the certificate doesn't confirm which molecule is in the vial.
- The certificate is a clean document: no mismatched fonts, edited numbers or a missing verification code.
How to check this COA in under a minute
- Find the lot number on your vial label and confirm it reads TB5-10-001.
- Open Janoshik's record with the button above, or go to www.janoshik.com and enter Task #71152, key JDENM1KVM4DH.
- Compare the lot number, test date, purity and identity result with the table above. They should be identical.
- New to COAs? Read How to read a peptide COA for what HPLC purity and mass spec identity mean.
Questions about lot TB5-10-001
What HPLC purity did TB-500 Vial 10 mg lot TB5-10-001 test at?
Janoshik reported 99.86% HPLC purity for lot TB5-10-001 in a report dated Jul 16, 2025.
How do I verify the COA for lot TB5-10-001?
Go to www.janoshik.com and enter the task number + unique key Task #71152, key JDENM1KVM4DH. The lab's own record should show lot TB5-10-001 with the same dates and results as this page.
Is lot TB5-10-001 the newest TB-500 Vial 10 mg lot from Peptira?
No. The most recent TB-500 Vial 10 mg certificate we have from Peptira is lot TB5-10-005. Your vial label tells you which lot you have.
Does this certificate apply to my vial?
Only if the lot number printed on your vial reads TB5-10-001 exactly. A certificate of analysis covers one lot; it says nothing about other lots of the same product.
Other lots and COAs
TB-500 Vial 10 mg at Peptira
Lab-tested lot TB5-10-001 · 99.86% HPLC purity · Janoshik
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