30%
Testing
Depth of Certificate-of-Analysis coverage.
Independent · Oct 2026 · 10 vendors tracked · United States
One vendor.
Not a top-10.
Every vendor is scored on the same five axes — Testing, Purity, US-Friendliness, Value, Trust. Flagged vendors never enter the recommendation. The methodology is public before the pick.
20%
Purity
Stated typical purity, corroborated by lab reports.
15%
US-Friendliness
US warehouse, domestic carrier speed, USD card or bank payment, no customs on delivery.
15%
Value
Price versus evidence.
20%
Trust
Time in market, third-party review volume and authenticity, incident history.
RANK_01 · Editor's pickVID-HYDRO-RE
Hydro Research
USA (domestic) — no legal entity or street address published; Venmo payee 'Hydro Consulting'; Google Business pin in the Chicago area · US · founded 2023
8.7/10
99.5% purity4-param COAFree $200+
Testing
9.0
Purity
9.0
US
10.0
Value
7.0
Trust
8.0
Interactive · 4 questions · 30 seconds
The vendor finder.
Tell us your priorities — we'll name one.
No email required. The finder runs your answers against our weighted scorecard and returns one specific vendor — not a "top 10." Below is a taster: answer the first question to see a live recommendation, or take the full 4-question version →
Q 01 · PRIORITY
What matters most?
▸ Answer to see result
Hydro Research
USA (domestic) — no legal entity or street address published; Venmo payee 'Hydro Consulting'; Google Business pin in the Chicago area · US · since 2023
US-domestic WooCommerce storefront (domain registered October 2023) shipping FedEx 2-Day within the United States only, dispatched the same or next business day, free over $200. It…
Composite score8.7/10
Stated purity99.5%
Testing params4
Price band$30–$165
Leaderboard
The top six. By composite score.
| # | Vendor | HQ | Testing | Purity | US | Reviews | Score | |
|---|---|---|---|---|---|---|---|---|
| 01 | Hydro ResearchVID-HYDRO-RE | US | 4-param | 99.5% | Yes | 4.9/5 · Google | Review → | |
| 02 | Core PeptidesVID-CORE-PEP | US | 3-param | 99.1% | Yes | — | Review → | |
| 03 | QSC PeptidesVID-QSC-PEPT | CN | 3-param | 99.5% | Yes | — | Review → | |
| 04 | SwissChemsVID-SWISSCHE | US | 2-param | 99.3% | Yes | — | Review → | |
| 05 | Direct PeptidesVID-DIRECT-P | US | 3-param | 99.5% | Yes | 4.9/5 · Google | Review → | |
| 06 | Biotech PeptidesVID-BIOTECH- | US | 2-param | 99% | Yes | — | Review → |
Price index · single vials, per vial
Same peptide. Different prices by up to 5×.
Reference compounds
BPC-157 5 mg
7 vendors · lowest $36 · highest $69 · +92% spread
Hydro ResearchVID-HYDRO- · US
$36
Purple PeptidesVID-PURPLE · US
$39
Direct PeptidesVID-DIRECT · US
$39
SwissChemsVID-SWISSC · US
$40
Peptide ProsVID-PEPTID · US
$47
Core PeptidesVID-CORE-P · US
$52
Vyal LabsVID-VYAL-L · US
$69
Head-to-head
Pick any two. See every parameter.
Parameter
VID-HYDRO-RE · US
VID-CORE-PEP · US
Composite score
8.7/10
8.6/10
Vendor ID
VID-HYDRO-RE
VID-CORE-PEP
Headquarters
USA (domestic) — no legal entity or street address published; Venmo payee 'Hydro Consulting'; Google Business pin in the Chicago area
USA (domestic)
Founded
2023
2019
Stated purity
99.5%
99.1%
COA params
4 — HPLC purity + net content per lot (Janoshik Analytical, lab-hosted verification keys), RP-HPLC + LAL endotoxin + heavy metals (Chromate Labs, chromate.org/verify), Full QC panel: HPLC purity, HPLC-RTM identity, net content, ICP-MS metals (ILS Laboratories, San Diego)
3 — HPLC, LC-MS, Endotoxins
US warehouse
Yes
Yes
Price band
$30–$165
$41–$90
Shipping free at
$200+
$200+
Reviews
4.9/5 · 70 · Google
—
Affiliate
20% per sale (SliceWP; first 90 days, then 15–30% by quarterly sales tier; lifetime on referred customers)
—
GDPR
Unknown
Compliant
Payment
Credit card, Apple Pay / Google Pay, Cash App, Pay by Bank, Venmo (3% off)
Credit card, Debit card, Cryptocurrency
Flag status
Clear
Clear