Verifying a GDF-8 (Myostatin) listing means matching the exact SKU, the nominal size of each vial, the number of vials in a pack, and a published certificate of analysis for a named batch. The public catalog lists SKU GDF as 1 mg per vial in packs of 10 vials (GDF-8 (Myostatin)). A product name alone is not enough when sizes or batches can differ, and a published report applies only to the batch and SKU it names.
Listed SKU, vial size and pack quantity
The public product page records SKU code GDF, a nominal size of 1 mg per vial, and 10 vials per pack (GDF-8 (Myostatin)). SKU scope is public listed variants only, at most 40, and is not a claim that the list is exhaustive. CAS number, molecular formula and molecular weight are recorded as unknown. Unknown catalog fields are not zeros, passes, or evidence of absence.
Site editorial guidance treats per-vial size, vials per pack and pack price as three separate fields (Per-vial size versus pack quantity). A multiplied label describes that many vials at the stated size each; it is not one vial holding the multiplied mass. For SKU GDF, ten vials at a nominal 1 mg each would sum to 10 mg across one pack. That sum is label arithmetic, not an analytical measurement. Actual fill and content measurements belong to the particular batch report.
Before ordering, that guide recommends matching the exact product and SKU, checking the per-vial size and unit, checking vials per pack, setting the number of packs required, and reviewing matching batch records. If a quotation uses a different packaging description, ask support to reconcile it before relying on the calculation. The product page shows the price of one listed pack; selecting a different SKU can change pack price and available stock. Display currency follows the selected country, and a saved screenshot can become outdated when prices or availability change (Per-vial size versus pack quantity).
Published batch Q3QENPFDIOI3
One published COA is tied to batch Q3QENPFDIOI3, certificate QC-2026-RC7A7VK4J5, and SKU GDF at 1 mg (GDF-8 (Myostatin) — batch Q3QENPFDIOI3). The laboratory named on that record is Stand Science & Technology Pharmaceutical (Qingdao) Co., Ltd. (Stand Group). The test date is 2026-07-16. Those results are recorded for this batch only. They are not evidence of every batch, and they are not evidence of clinical suitability. Provider verification links were not independently fetched.
Summary rows on that record:
| Report type | Result |
|---|---|
| Identity | Conforms |
| Purity | 97.1 % |
| Weight | 1.05 mg |
| Endotoxin | <3 EU/mg |
Item-level tests, each with analyte GDF-8 (Myostatin) GDF and determination Pass:
| Item | Method | Specification | Result |
|---|---|---|---|
| Appearance | Visual | White or almost white loose powder | White loose powder |
| Identity | SDS-PAGE | Consistent with expected molecular weight | Conforms |
| Purity | SDS-PAGE | NLT 95.0 % | 97.1 % |
| Protein content | UV A280 | NLT 90.0 % | 91.6 % |
| Actual fill | Gravimetric | 1 mg | 1.05 mg |
| Water content | Karl Fischer | NMT 8.0 % | 3.8 % |
| Bacterial endotoxins | LAL (gel-clot) | NMT 10 EU/mg | <3 EU/mg |
Copy analyte names, methods, units, and qualifiers such as NLT, NMT and < exactly as recorded. The gravimetric actual fill of 1.05 mg is a batch measurement; it is not a rewrite of the 1 mg catalog size. Endotoxin results are not a sterility claim. The record does not establish safety, storage conditions, shipping guarantees, dosing, or suitability for human or veterinary use.
Match SKU and batch before using a COA
A SKU identifies a listed product variant. A batch number identifies a batch record. Use both when locating a COA (How to find a COA by SKU and batch number). Compare product name, SKU, batch and certificate number. Open the product page, select the SKU, and read the matching certificate panel. Selecting a SKU updates the report without moving the viewing position.
Avoid two common mismatches. A report for one size should not be used as evidence for another size merely because both share a product name. An older published batch is not evidence of the batch that will be shipped next. For GDF-8 (Myostatin), the published example is SKU GDF at 1 mg for batch Q3QENPFDIOI3. Do not treat that page as proof of a different SKU or a later allocation.
When a report is missing, ask support for the exact SKU and batch. A missing public result is not automatically a failed test, and it is not a passed test either. If a previously shared report link is no longer available, ask support for the current documentation rather than substituting a different batch (How to find a COA by SKU and batch number).
Start by matching product name, SKU and batch number. Open the original report and compare its certificate number and test date with the summary, then use the verification link for that report. A verification page may require an account with the report provider. Seeing a link alone does not prove that a report is currently valid (How to verify a CertiPeptide COA). A published report does not mean every order receives that batch; confirm the batch allocated to the order separately. If details differ, do not substitute a report for a similar product or a different size. Send support the SKU, batch number and the specific difference. A screenshot can help comparison, but the original document and provider record are stronger verification evidence. The website does not independently confirm the current status of a login-protected record.
Verification checklist
| Check | What to match |
|---|---|
| Product name | GDF-8 (Myostatin) |
| SKU | GDF |
| Nominal size per vial | 1 mg |
| Vials per pack | 10 |
| Nominal pack sum (label arithmetic only) | 10 mg |
| Example published batch | Q3QENPFDIOI3 |
| Certificate number | QC-2026-RC7A7VK4J5 |
| Test date on that record | 2026-07-16 |
| Laboratory on that record | Stand Science & Technology Pharmaceutical (Qingdao) Co., Ltd. (Stand Group) |
| Allocated shipment batch | Confirm separately; do not assume it is Q3QENPFDIOI3 |
- Match the exact product name and SKU GDF.
- Confirm 1 mg as the per-vial size and 10 as vials per pack.
- Treat 10 mg as pack arithmetic only.
- Open the batch page for the allocated lot and compare certificate number, date, laboratory and SKU.
- Compare each analyte, method, specification, result, unit and determination with the original report.
- Follow the provider verification process; a link by itself is not confirmation.
- If any field is missing or differs, ask support rather than substituting another batch.
Frequently Asked Questions
What SKU and pack size are listed for GDF-8 (Myostatin)?
The public product page lists SKU GDF at a nominal 1 mg per vial with 10 vials per pack. That listing is public listed variants only, at most 40, and is not a claim that the list is exhaustive. CAS number, molecular formula and molecular weight are recorded as unknown.
Does a published GDF-8 COA mean every order receives batch Q3QENPFDIOI3?
No. Published results for batch Q3QENPFDIOI3 and certificate QC-2026-RC7A7VK4J5 apply to that batch and SKU GDF (1 mg) only. Confirm the batch allocated to an order separately.
What if a public COA is missing for the allocated batch?
Ask support for the exact SKU and batch. A missing public result is not automatically a failed test, and it is not a passed test either. Do not substitute a different batch.
Which purity and fill values were recorded for batch Q3QENPFDIOI3?
For analyte GDF-8 (Myostatin) GDF on that batch only, purity by SDS-PAGE was 97.1 % (specification NLT 95.0 %, Pass) and gravimetric actual fill was 1.05 mg (specification 1 mg, Pass). Protein content by UV A280 was 91.6 % (specification NLT 90.0 %, Pass).
Explore Further
Browse our research peptide catalog and review third-party lab reports & COAs for published batches.
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Research use only. The information above is provided for educational and laboratory research purposes only. The compounds discussed are not approved for human or veterinary use, diagnosis, treatment, or the prevention of any disease. Nothing here is medical advice.
