BSF Basifu Technology (Qingdao) Co
also known as Yoyo Peptide, Yoyo
Doses land close to the label; 0 of 3 vials were more than 10% under.
For research use only. VendorVerify sells nothing and takes no money from vendors. No affiliate links, no coupon codes, no paid rankings. How scores work
Every vial we have on file
- Within ±5% / purity 99%+
- 5–20% under, overfilled / purity 95–99%
- Failed: over 20% under, over 50% over, empty or under 95% pure
Dose vs label
3 vials measured · 0 emptyPurity
3 vials measured- Median purity
- 99.33%
- across 3 vials
- Median dose vs label
- +4.7%
- across 3 vials; + means more than the label
- Failed vials
- 0.0%
- 0 of 3 vials; the rate weights each lab report equally and recent reports more, as the score does
- Lab reports
- 2
- Mar 5, 2025 to May 7, 2025
Labs: Janoshik, SR Biolabs
Key facts
- VendorVerify holds third-party lab results for 3 BSF vials from 2 lab reports, dated Mar 2025 to May 2025.
- 0 of 3 BSF vials failed: empty, under 95% pure, more than 20% under the label or more than 50% over it.
- The median BSF vial tested at 99.33% purity across 3 vials with a purity result.
- The median BSF vial held +4.7% compared with its label across 3 vials where the lab measured the amount.
- Buyers have had 1 different compound from BSF lab tested.
- BSF is not ranked because it has fewer than the 5 lab reports a vendor needs to be ranked.
- BSF vials on file were tested by Janoshik, SR Biolabs.
By peptide
| Peptide | Vials | Failed | Median purity | Median dose vs label | Dose vs label, −20% to +20% |
|---|---|---|---|---|---|
| Tirzepatide | 3 | 0 | 99.33% | +4.7% |
Lab reports
One row per tested vial, newest first.
| Date | Peptide | Lab | Label | Measured | Dose vs label | Purity |
|---|---|---|---|---|---|---|
| May 7, 2025 | TirzepatideBatch Pink Cap | Janoshik | 15 mg | 16.98 mg | +13.2% | 99.63% |
| May 7, 2025 | TirzepatideBatch Pink Cap | Janoshik | 15 mg | 15.7 mg | +4.7% | 99.09% |
| Mar 5, 2025 | TirzepatideBatch Yoyo Peptide T10 Red Cap | SR Biolabs | 10 mg | 10.29 mg | +2.9% | 99.33% |
BSF: common questions
Is BSF legit?
We can't vouch for any vendor as a business, and we don't sell or recommend products. What we can show is what buyers' independent lab tests found: 0 of 3 BSF vials on file failed, meaning they were empty, under 95% pure, more than 20% under the label or more than 50% over it. BSF has 2 lab reports on file, fewer than the 5 needed to be ranked, so treat this as early data. Results on file run from Mar 2025 to May 2025.
Has BSF been third-party tested?
Yes. We hold results for 3 BSF vials from 2 lab reports, tested by Janoshik, SR Biolabs. Each result comes from a lab report a buyer paid for, not from a certificate the vendor supplied.
Are BSF vials dosed correctly?
Across 3 vials where the lab measured the amount, the median BSF vial held +4.7% compared with its label. 0 of 3 held more than 10% less than the label said.
How pure is BSF?
The median BSF vial tested at 99.33% purity across 3 vials with a purity result. We count anything under 95% as a failed vial, and a vial at 99.5% or higher gets full marks for purity.
Does BSF pay to be listed or ranked?
No. VendorVerify sells nothing and takes no money from vendors. No affiliate links, no coupon codes, no paid rankings. A vendor's place comes only from lab results.
Will my BSF vial match these results?
Not necessarily. A lab report describes the vials that were tested, and batches differ. A clean record lowers the odds of a bad vial but doesn't rule one out, which is why newer reports count for more in the score.
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