Extreme Peptides
Re-analysis of the published site located 5 certificate records and wrote 4 mapped to tracked compounds. 6 strengths and 3 weaknesses recorded from the findings.
Last verified · 4 certificate records · rubric v1.10.0 · www.extremepeptides.com
PepIndex score
64.2 / 100
3.2/ 5Partly documentedData coverage
82%
Coverage is the share of scored fields we hold and corroborated for Extreme Peptides. A score built on a handful of unchecked claims and a score built on forty verified data points are not the same finding, so both numbers are always published together. How coverage is computed.
Strengths
- Publishes 56 lot-specific certificates across its catalogue
- Certificates are readable publicly, without an account
- Testing laboratory named on certificates (Richard Sylvester MD)
- Publishes a physical postal address
- Prices are visible without an account
- Retains historical certificates for comparison over time
Weaknesses
- No ISO/IEC 17025 accreditation recorded for the testing lab
- No registered legal entity is disclosed
- No independent third-party reviews located
Regulatory & enforcement record
No adverse regulatory or enforcement action on record. We record authority actions — FDA warning letters, import alerts, seizures, criminal charges — when located. Self-reported reviews are deliberately not scored, because for this market they can be manufactured.
Recorded data pointsEvery field with its source, capture date and whether we corroborated it8 verified6 claimed5 not recordedView all →Hide ↑
A tag of verified means we opened the cited source and confirmed the value; published means we recorded the vendor’s own published information, taken at face value. Both count in full; only a value with no checkable source earns nothing. Fields older than 90 days are marked stale.
Testing
- Testing laboratory
- Richard Sylvester MDVerified1 Aug 2026sourceLaboratory read from the certificate itself by vision extraction of the document. Evidence: “Laboratory named on the certificate document: Richard Sylvester MD.”
- ISO/IEC 17025 accreditation
- Not recordedNot recorded
- Certificate granularity
- Not recordedNot recorded
- Certificate accessibility
- publicVerified1 Aug 2026editorial checkCertificates were fetched without passing any gate. Evidence: “Certificates were fetched without passing any gate.”
- Labeled vs. actual mg published
- YesVerified1 Aug 2026sourceLabeled mass is published against assayed mass, not purity alone. Evidence: “Labeled 5.22 mg, assayed 5.22 mg, purity 99.89% (lot EXT-CJIP-00008, Richard Sylvester MD).”
- Historical certificates retained
- YesVerified1 Aug 2026editorial checkSuperseded certificates remain reachable, so consistency across lots can be checked. Evidence: “56 certificate documents reachable across 5 current lots, so superseded certificates remain available.”
Business
- Website
- https://www.extremepeptides.comVerified1 Aug 2026sourceConfirmed reachable by the analysis run. Evidence: “Origin resolved and fetched: https://www.extremepeptides.com”
- Legal entity
- Not recordedNot recorded
- Country
- Not recordedNot recorded
- Physical address
- 931 Village Blvd STE 905 PMB 164 West Palm Beach, FL 33409Published1 Aug 2026sourcePublished by the vendor. Confirmed present on the page; not independently confirmed as an operating location. Evidence: “…hipping Days Mon - Fri / Except Holidays Phone number +1 (888) 853-8123 Address 931 Village Blvd STE 905 PMB 164 West Palm Beach, FL 33409 Email service@extreme…”
- Contact channels
- Email (service@extremepeptides.com), Telephone (888) 853-8123Published1 Aug 2026sourceContact routes published by the vendor. Not tested for a reply, so recorded as published rather than reachable. Evidence: “service@extremepeptides.com · (888) 853-8123”
Commercial
- Pricing
- ungatedVerified1 Aug 2026sourcePrices are published openly and can be compared without registering. Evidence: “…ee Shipping We've got you covered! Free shipping is available on any order over $50. Earn Rewards Earn points every time you buy from us and use them towards fu…”
- Payment methods
- Not recordedNot recorded
- Guarantee / reship policy
- Case by caseVerified1 Aug 2026sourceA replacement is offered but the published policy reserves discretion to deny claims. Evidence: “…ing upon the information provided to check for accuracy. Extreme Peptide at its sole discretion, may require further verification of affiliation prior to order…”
Track record
- Independent reviews located
- Not recordedNot recorded
- Mean sentiment (0–5)
- Not recordedNot recorded
- Complaint pattern
- Not recordedNot recorded
Certificate recordsLot-level results with labeled versus assayed mass4 lots0.3% mean deviationView all →Hide ↑
Discrepancy is computed as the absolute difference between labeled and assayed mass, divided by the labeled mass. A vendor-published certificate is a claim; only an independently commissioned assay is treated as corroboration.
| Compound | Lot | Tested | Lab | Labeled | Assayed | Discrepancy | Purity | Source |
|---|---|---|---|---|---|---|---|---|
| Ipamorelin | EXT-CJIP-00008 | Richard Sylvester MD | 5.22 mg | 5.22 mg | 0.0% | 99.9% | Vendor-published | |
| KPV | EXT-KPV-00004 | Richard Sylvester MD | 5.73 mg | 5.67 mg | 1.0% | 99.2% | Vendor-published | |
| Tesamorelin | EXT-TESA-00005 | Richard Sylvester MD | 2.74 mg | 2.74 mg | 0.0% | 99.6% | Vendor-published | |
| Kisspeptin | EXT-KISS-00003 | Richard Sylvester MD | 5.9 mg | 5.9 mg | 0.0% | 99.4% | Vendor-published |
Compounds carried
What the research says about what Extreme Peptides sells
BPC-157
What the research on BPC-157 actually shows
5 not established
CJC-1295
What the research on CJC-1295 actually shows
3 not established
Ipamorelin
What the research on ipamorelin actually shows
4 not established
Kisspeptin
What the research on Kisspeptin actually shows
3 not established
Melanotan II
What the research on Melanotan II actually shows
3 not established
Tesamorelin
What the research on Tesamorelin actually shows
3 not established
A vendor’s score measures what it can demonstrate about its testing. It says nothing about whether the compounds it lists have evidence behind them — those are separate questions, and the digests above answer the second one.
How this score was calculatedEvery signal, its weight and the arithmetic — reconstructable by handrubric v1.10.0View calculation →Hide ↑
Each criterion is scored out of 100 over the signals we could assess, then weighted into the overall figure. Within a criterion, a signal contributes weight × merit × credit: merit is how good the recorded value is, credit is what its provenance earns — 1.00 for a value with a checkable source, 0 for a value recorded without one. A missing signal counts as a partial gap — half its weight — so a vendor that publishes what others leave blank scores higher, while a blank still costs; a value recorded without a source counts in full and earns nothing, so omitting one can never raise a score. A criterion with no data at all — track record when no independent reviews are locatable — is set aside and the remaining weights renormalised; the coverage figure, shown alongside, reports how complete the assessment is.
Testing transparency
34.5 / 100 · weight 26% → 9
Is the testing lab named? Is it ISO/IEC 17025 accredited? Are certificates of analysis lot-specific, and can anyone read them without an account?
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Testing lab is namedA specific laboratory is identified, so the assay can be traced. | Richard Sylvester MDLaboratory read from the certificate itself by vision extraction of the document. Evidence: “Laboratory named on the certificate document: Richard Sylvester MD.” | Verified1 Aug 2026 · source | 1 | 1.00 | 1.00 | 1.00 / 1 |
| Lab holds ISO/IEC 17025 accreditationNot recorded. | — | Not recorded | 4 | 0.00 | not recorded | 0.00 / 4 |
| Certificate granularityNot recorded. | — | Not recorded | 3 | 0.00 | not recorded | 0.00 / 3 |
| Certificates readable without an accountAnyone, including us, can read the certificates without registering. | PublicCertificates were fetched without passing any gate. Evidence: “Certificates were fetched without passing any gate.” | Verified1 Aug 2026 | 4 | 1.00 | 1.00 | 4.00 / 4 |
| Recognised testing laboratory0 of 4 certificates name a real, identifiable testing laboratory (a known lab, or a clearly independent one). Certificates with no named lab, or where the "lab" is just the vendor's own name, do not count — anyone can print those. | 0 / 4 recognised lab | PublishedStale2 Mar 2026 · source | 6 | 0.00 | 1.00 × 0.9 stale | 0.00 / 6 |
| Testing transparency subtotal · coverage 61% | 5.00 / 18 | |||||
Documentation depth
92.4 / 100 · weight 22% → 20.3
Does the vendor publish labeled-versus-actual milligram figures, retain historical certificates, and how large are the discrepancies we can measure?
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Labeled vs. actual mg publishedQuantitative fill data is published, not only a purity percentage. | PublishedLabeled mass is published against assayed mass, not purity alone. Evidence: “Labeled 5.22 mg, assayed 5.22 mg, purity 99.89% (lot EXT-CJIP-00008, Richard Sylvester MD).” | Verified1 Aug 2026 · source | 1 | 1.00 | 1.00 | 1.00 / 1 |
| Historical certificates retainedPast certificates remain accessible, so consistency over time can be checked. | RetainedSuperseded certificates remain reachable, so consistency across lots can be checked. Evidence: “56 certificate documents reachable across 5 current lots, so superseded certificates remain available.” | Verified1 Aug 2026 | 3 | 1.00 | 1.00 | 3.00 / 3 |
| Certificates the vendor publishes56 certificates located, 4 of them indexed with readable results; full credit at six. | 56 published, 4 indexed | PublishedStale2 Mar 2026 · source | 7 | 1.00 | 1.00 × 0.9 stale | 6.30 / 7 |
| Labeled vs. actual discrepancyMean absolute deviation between labeled and assayed mass across 4 certificates. Zero scores full marks; 10% or worse scores nothing. | 0.3% mean | PublishedStale2 Mar 2026 · source | 1 | 0.97 | 1.00 × 0.9 stale | 0.88 / 1 |
| Certificate recencyThe most recent certificate is dated 2026-03-02, about 6 months ago. Certificates within a year score full marks; two years or older scores nothing. | newest 2026-03-02 | PublishedStale2 Mar 2026 · source | 4 | 1.00 | 1.00 × 0.9 stale | 3.60 / 4 |
| Documentation depth subtotal · coverage 100% | 14.78 / 16 | |||||
Price & value
46.6 / 100 · weight 20% → 9.3
How the vendor’s per-milligram prices for a standard basket of common compounds compare to the market. Priced below the peer median scores higher; well above it scores lower. An overpriced vendor cannot outrank a comparably documented, better-priced one.
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Price vs market ($/mg)Priced about 18% above the peer median per milligram across a standard basket — weaker value than the typical vendor. | 118% of medianPrice index 118.4% of peer median across 4 compounds (0 outliers dropped): bpc-157 $9.8/mg, cjc-1295 $15.5/mg, ipamorelin $5.36/mg, melanotan-ii $4/mg. | Verified31 Aug 2026 · source | 10 | 0.47 | 1.00 | 4.66 / 10 |
| Price & value subtotal · coverage 100% | 4.66 / 10 | |||||
Track record
100 / 100 · weight 12% → 12
Adverse regulatory or enforcement action on record — warning letters, import alerts, seizures, criminal charges. Authority-issued and publicly verifiable. Self-reported reviews are deliberately not scored: for this market they can be manufactured.
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Regulatory & enforcement recordNo adverse regulatory or enforcement action on record. Authority actions — warning letters, import alerts, seizures, criminal charges — are recorded here when located; self-reported reviews are deliberately not scored, because for this market they can be manufactured. | None on record | Verified8 Sept 2026 | 10 | 1.00 | 1.00 | 10.00 / 10 |
| Track record subtotal · coverage 100% | 10.00 / 10 | |||||
Business transparency
72.7 / 100 · weight 12% → 8.7
Is a legal entity named, is there a physical address, and can the vendor be reached?
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Named legal entityNot recorded. | — | Not recorded | 3 | 0.00 | not recorded | 0.00 / 3 |
| Physical address publishedA postal address is published. | 931 Village Blvd STE 905 PMB 164 West Palm Beach, FL 33409Published by the vendor. Confirmed present on the page; not independently confirmed as an operating location. Evidence: “…hipping Days Mon - Fri / Except Holidays Phone number +1 (888) 853-8123 Address 931 Village Blvd STE 905 PMB 164 West Palm Beach, FL 33409 Email service@extreme…” | Published1 Aug 2026 · source | 2 | 1.00 | 1.00 | 2.00 / 2 |
| Contact channelsDistinct contact routes we could identify. Full credit at two. | Email (service@extremepeptides.com), Telephone (888) 853-8123Contact routes published by the vendor. Not tested for a reply, so recorded as published rather than reachable. Evidence: “service@extremepeptides.com · (888) 853-8123” | Published1 Aug 2026 · source | 2 | 1.00 | 1.00 | 2.00 / 2 |
| Business transparency subtotal · coverage 57% | 4.00 / 7 | |||||
Commercial clarity
61.1 / 100 · weight 8% → 4.9
Is pricing visible without an account, is there a stated guarantee or reship policy, and are payment methods disclosed?
| Signal | Recorded value | Provenance | Weight | Merit | Credit | Points |
|---|---|---|---|---|---|---|
| Pricing visible without an accountPrices are published openly and can be compared. | UngatedPrices are published openly and can be compared without registering. Evidence: “…ee Shipping We've got you covered! Free shipping is available on any order over $50. Earn Rewards Earn points every time you buy from us and use them towards fu…” | Verified1 Aug 2026 · source | 4 | 1.00 | 1.00 | 4.00 / 4 |
| Guarantee / reship policyWhether the published policy states an outcome in advance or leaves it to discretion. | Case by caseA replacement is offered but the published policy reserves discretion to deny claims. Evidence: “…ing upon the information provided to check for accuracy. Extreme Peptide at its sole discretion, may require further verification of affiliation prior to order…” | Verified1 Aug 2026 · source | 3 | 0.50 | 1.00 | 1.50 / 3 |
| Payment methods disclosedNot recorded. | — | Not recorded | 1 | 0.00 | not recorded | 0.00 / 1 |
| Payment offers buyer recourseNot recorded. | — | Not recorded | 3 | 0.00 | not recorded | 0.00 / 3 |
| Commercial clarity subtotal · coverage 64% | 5.50 / 11 | |||||
Total
| Criterion | Subscore | Weight | Contribution | Coverage |
|---|---|---|---|---|
| Testing transparency | 34.5 | 26% | 9 | 61% |
| Documentation depth | 92.4 | 22% | 20.3 | 100% |
| Price & value | 46.6 | 20% | 9.3 | 100% |
| Track record | 100 | 12% | 12 | 100% |
| Business transparency | 72.7 | 12% | 8.7 | 57% |
| Commercial clarity | 61.1 | 8% | 4.9 | 64% |
| Computed score | 100% | 64.2 | 82% |
Rubric v1.10.0 · 8 verified, 6 claimed, 0 unsourced, 5 not recorded, 4 stale of 19 scored signals
Community
Reviews
Reader reviews are community context only — they are never part of Extreme Peptides’s computed PepIndex score, which is built from evidence alone.
No reviews yet. .