Independently tested — with one caveat
- An independent lab record backs Sports Technology Labs' PT-141 at 99.9% — the exact evidence most listings lack.
- A certificate covers one submitted batch, not every vial — confirm it matches the batch you receive.
How to verify this yourself
Check the seller's COA is for YOUR batch number, then paste it into Verify to confirm it's a real, unedited Janoshik record.
Open the Verify toolPT-141 (Bremelanotide) 10 mg
A synthetic cyclic heptapeptide melanocortin-receptor agonist.
Observed price
Median $/mg
$4.30/mg
Range $/mg
$1.02/mg–$17.9/mg
This listing
#2 of 24
mid-market
Real / active mg
$2.60/mg
Compared by cost-per-mg against 24 sized listings of this compound. Real / active mg divides cost-per-mg by measured purity. Read from the certificate, not re-measured by VialGrade. Purity is not a grade. Purity vs grade
- Availability
- In stock
- Checked
- 9 hours ago
Hands you to sportstechnologylabs.com — VialGrade doesn’t sell or take payment
Some vendor links may earn VialGrade a commission. It never changes a grade, a price, or where a listing ranks.
Sports Technology Labs
Unclaimed page
18
Lab tests
99.4%
Median purity
24
Listings
Real listing aggregated from the vendor's public page. Buying happens on their site, never on VialGrade — we take no payment and hold no stock. These are sold for laboratory research use only, not for human consumption; the seller sets their own terms and age limits at checkout.
Independently tested — with one caveat
- An independent lab record backs Sports Technology Labs' PT-141 at 99.9% — the exact evidence most listings lack.
- A certificate covers one submitted batch, not every vial — confirm it matches the batch you receive.
How to verify this yourself
Check the seller's COA is for YOUR batch number, then paste it into Verify to confirm it's a real, unedited Janoshik record.
Open the Verify toolCompare by real cost
Every PT-141 listing, cheapest per mg first
Sticker prices hide the size, so listings are ranked by what a milligram actually costs — with independently tested purity where it exists. All 32 are here: the last 8 are listings whose vendor never published a strength we can read, so they have no per-mg figure to sort on.
| # | Vendor | Size | Price | Per mg | Tested purity | Real $/active mg | |
|---|---|---|---|---|---|---|---|
| 1 | Umbrella Labs | 40mg total | $41 | $1.02/mg · too cheap? | — | $1.03/mgbest value | View |
| 2 | Sports Technology Labs | 10mg total | $26 | $2.60/mg | 99.9% | $2.60/mg | View |
| 3 | Chameleon Peptides | 100mg total10-vial kit each | $294 | $2.94/mg | 99.9% | $2.94/mg | View |
| 4 | Umbrella Labs | 40mg total | $130 | $3.25/mg | — | $3.25/mg | View |
| 5 | Bluum Peptides | 10mg total | $35 | $3.50/mg | — | $3.50/mg | View |
| 6 | Ion PeptideUnavailable | 30mg total | $109 | $3.63/mg | — | $3.64/mg | View |
| 7 | Ion Peptide | 10mg total | $37 | $3.70/mg | — | $3.70/mg | View |
| 8 | Peptide Pros | 10mg total | $38 | $3.75/mg | — | $3.75/mg | View |
| 9 | Ascend Bio LabsUnavailable | 100mg total10MG / 10 Vials each | $400 | $4.00/mg | — | $4.00/mg | View |
| 10 | Modern Aminos | 10mg total | $41 | $4.10/mg | — | $4.10/mg | View |
| 11 | Ascend Bio LabsUnavailable | 30mg total10MG / 3 Vials each | $128 | $4.27/mg | — | $4.27/mg | View |
| 12 | Felix Chemical Supply | 10mg total | $43 | $4.30/mg | — | $4.30/mg | View |
| 13 | Core Peptides | 10mg total | $43 | $4.30/mg | — | $4.30/mg | View |
| 14 | Ez Peptides | 10mg total | $44 | $4.40/mg | 99.9% | $4.40/mg | View |
| 15 | Biotech Peptides | 10mg total | $45 | $4.50/mg | — | $4.50/mg | View |
| 16 | Simple PeptideUnavailable | 10mg total | $45 | $4.50/mg | — | $4.50/mg | View |
| 17 | Ascend Bio LabsUnavailable | 20mg total10MG / 2 Vials each | $90 | $4.50/mg | — | $4.50/mg | View |
| 18 | Ascension PeptidesUnavailable | 10mg total | $49 | $4.90/mg | — | $4.90/mg | View |
| 19 | Swiss ChemsUnavailable | 100mg totalPT-141 (Bremenalotide) · 10mg: KIT (10 vials) each | $500 | $5.00/mg | — | $5.00/mg | View |
| 20 | Swiss ChemsUnavailable | 10mg total | $50 | $5.00/mg | — | $5.00/mg | View |
| 21 | Ascend Bio LabsUnavailable | 10mg total | $52 | $5.20/mg | — | $5.21/mg | View |
| 22 | PurerawzUnavailable | 10mg total | $75 | $7.49/mg | — | $7.49/mg | View |
| 23 | PurerawzUnavailable | 10mg totalSublingual Tablets · 100mcg per tab/100ct/10mg each | $83 | $8.32/mg | — | $8.33/mg | View |
| 24 | Chameleon Peptides | 10mg total | $179 | $17.9/mg | 99.9% | $17.9/mg | View |
| Listed, but not rankable — no published strength to price per mg | |||||||
| — | Eternal Peptides | 1 vial | $22 | no size published | — | — | View |
| — | Nootropic Source | 1 vial | $25 | no size published | — | — | View |
| — | Cernum BiosciencesUnavailable | 1 vial | $45 | no size published | — | — | View |
| — | Nootropic Source | 1 vial | $50 | no size published | — | — | View |
| — | Vici Peptides | 1 vial | $67 | no size published | — | — | View |
| — | Behemoth LabzUnavailable | 1 vial | $73 | no size published | — | — | View |
| — | PurerawzUnavailable | 1 vial | $75 | no size published | — | — | View |
| — | PurerawzUnavailable | Nasal Spray · 10ml / 100mcg per spray / 10mg | $115 | no size published | — | — | View |
Real $/active mg divides the price-per-mg by the measured purity — the honest cost of the actual peptide, so a 90%-pure vial isn’t compared as if it were 99%. Too cheap? flags a listing far below the market rate — often underdosing or a fake, not a deal. The crown marks the cheapest non-outlier; best value marks the lowest real cost per active mg. A vendor shown as Unavailable or Low stock is priced here but not currently buyable.
Understand this compound
What is PT-141?
FDA-approved moleculea.k.a. Bremelanotide, VyleesiThe 'desire molecule' — it works on arousal circuits in the brain rather than on blood flow. Approved as Vyleesi for low sexual desire in premenopausal women.
Good to know: FDA approval is specific to premenopausal women with acquired, generalized HSDD; use in men or for other purposes is off-label, and it commonly causes nausea and can raise blood pressure.
How does PT-141 work?
The science
A cyclic heptapeptide melanocortin agonist, derived from the same alpha-MSH scaffold as the melanotans, that selectively activates MC3/MC4 receptors in the hypothalamus and limbic system to act on central sexual-desire pathways rather than local blood flow.
Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.
What is PT-141 researched for?
Studied for hypoactive sexual desire disorder in women and, via central mechanisms, erectile dysfunction in men.
- Tanning & libidoStudied in melanocortin research — skin pigmentation and related pathways.
- Reproductive & hormonalStudied in reproductive-hormone and endocrine-axis research.
How far has the research gone?
FDA-approved (for HSDD in premenopausal women) — approved as Vyleesi in 2019 following two Phase 3 trials.
Where the science stands — an approved drug is not the same as the research-grade material a vendor sells, which is unregulated regardless.
What is PT-141 commonly stacked with?
Compounds the research community frequently discusses alongside PT-141. Not a protocol or a recommendation — a map of what to read about next.
What should I check before buying?
- Independent purity. Look for a third-party COA (Janoshik or MZ) showing a measured purity — not just a number the vendor typed.
- Batch match. The strongest evidence is a certificate for the exact batch you’ll receive, attributed to this vendor — check the cross-verification on the listing.
- Vendor reputation. See how the vendor is talked about in the community before trusting a new name.
Research context only — VialGrade never gives dosing, medical, or human-use guidance.
The lab evidence
What we could verify
Each row is a separate question with its own answer — one green row never vouches for the rest.
Identity
EstablishedAn independent lab record backs this vendor's testing for this compound.
Measured purity
EstablishedIndependently measured 99.90%. Read from the certificate, not re-measured by VialGrade. Purity is not a grade.
Batch traceability
UnknownNo batch on this listing matches an independent record.
Sterility
Not testedA purity certificate doesn't measure this — no such test on record.
Dose accuracy
UnknownNot something VialGrade measures — no test on record.
These certificates are for PT-141 across every maker VialGrade tracks — not necessarily Sports Technology Labs’s own stock. This listing’s specific evidence is the matrix above.
Independent testing
Independent lab tests on record for PT-141
Real, publicly verifiable third-party tests. Purity is read from the certificate itself. A test reflects one lab’s result for one submitted batch — not a guarantee that every vial matches.
How does this data get here?
Every record below is a real certificate of analysis, gathered two ways: from the public verification feeds that independent labs (like Janoshik) publish, and from the certificates vendors post on their own product pages. We open each certificate document and read the measured purity, content, batch, and date directly off it — a scraper can’t read a number printed inside an image, so this is done by machine vision, then recorded here with a link back to the original.
Nothing here is typed in by a vendor or invented by us. Where a certificate is missing, we say so rather than filling the gap.
We re-check the lab feed, too. A “still listed” tag means the certificate is currently public in Janoshik’s database — we re-verify against the live feed and stamp the date. If a cert is later pulled, the tag flips. It’s a freshness check on the same source, not a second independent opinion.
What a certificate does & doesn’t prove
Three different questions. Purity (“how clean?”), identity (“is it the right molecule?”, a mass-spec test), and content (“did I get the labeled mg?”) are separate. A vial can be 99% pure and still be the wrong peptide, or the right peptide underdosed. We flag the measured dose against the label above; underdosing is the most common real fraud.
Who submitted the sample matters. Most of these are vendor-submitted — the seller chose which vial to send, so one good certificate doesn’t prove every batch is the same. The gold standard is a blind test, where a buyer sends a vial they bought as a normal customer. Same label doesn’t prove same product; same batch number doesn’t prove same batch.
99.9%
highest tested purity
Independent test on record — 99.90%
This listing doesn't advertise third-party testing, but we do hold an independent record for Sports Technology Labs's PT-141, measured at 99.90%. Bonus evidence, not a guarantee of this specific batch.
- Independent record. A third-party test references Sports Technology Labs for PT-141 at 99.90%.
Certificate analyzed 2025-10-17
Open the independent certificateCross-checks the vendor’s testing claim against independent lab records. Read from the certificate, not re-measured by VialGrade. Purity is not a grade. Never a statement that a product is safe, sterile, or correctly dosed. What “grade” actually means
Price trend
−50.0 % over 30 days
$51.99 → $25.99
Every observation
| Date | Observed |
|---|---|
| $51.99 | |
| $25.99 | |
| $25.99 |
−50.0 % over 30 days · 36 checks · $51.99 on Sep 2, 2026 → $25.99 on Oct 2, 2026. Vendor list price before shipping or discounts. Observed, not projected.
Research-use-only — not FDA-approved
Sold “for research use only,” this compound is not FDA-approved for human use and has not been evaluated for safety, purity, or sterility in people. It is generally not a scheduled controlled substance, so buying it as a research chemical is typically not itself a drug crime — but marketing or using it as a drug is not lawful, and it is not a dietary supplement.
General information, not legal or medical advice. VialGrade sells nothing and encourages no human use.
Same compound
See the full PT-141 market — all 32 vendors, price history & lab tests