Vendors / Precision Research Peptides

Precision Research Peptides

◆ Verified Partner ✓ COA-Verified United States

Precision-tested research peptides — every batch third-party verified.

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WATCHDOG20 · 20% off your first order
16 batches
Published COAs
99.6%
Avg. purity
100%
Identity confirmed
Freedom Diagnostics
Testing lab
Trust Score
86 / 100
Rating
Screened reviews
From (per vial)
$50

Ratings and pricing populate once real screened data is in — never invented.

For research use only. Editorial ratings — never for sale. Operator holds an interest in this vendor. Disclosures ▸

Products listed on this site are for laboratory research use only and are not for human consumption. Ratings, badges, and rankings are editorial and can never be bought.

This site's operator holds an interest in Precision Research Peptides. It receives no ranking preference; the same methodology and daily compliance review apply. Full policy

COA-Verified means 16 third-party lab reports from Freedom Diagnostics (HPLC purity + LC-MS identity) are published on this page. Independent re-testing for the full Verified badge is ongoing — the standard.

Watchdog compliance review
Precision Research Peptides
Reviewed daily · last 2026-08-29 · how this works ›
Passing 7 of 7 checks clear
Research-use-only framing Pass
Listings clearly state products are for laboratory research use only.
No health or dosing claims Pass
No therapeutic, dosing, or human-use claims anywhere in the listing.
Lab documentation available Pass
Batch-tied COAs (HPLC purity + mass-spec identity) exist and are accessible.
Transparent pricing Pass
Vial sizes and prices are listed clearly and consistently, no bait pricing.
Shipping & reship policy Pass
A stated shipping, tracking, and reship/refund policy is published.
No open Scam Watch flags Pass
No unresolved counterfeit, non-delivery, or COA-forgery reports on file. 2026-08-29: ALL SIX HOLD AT PASS on first-hand read of /, /shop/ and /lab-results/. The fulfilment line is BYTE-IDENTICAL across all three pages: 'Orders placed by 4:30 PM CT ship the same day, Mon-Fri.' COA coverage remains the best in the directory: 25 product rows / 33 lot-tied COA images, and ALL 16 SKUs rendering on /shop/ are lot-matched with NO GAPS. THE /shop/ TRUNCATION ITEM SHOULD NOW BE CLOSED, NOT MERELY SOFTENED - today's read found every rendered SKU lot-matched; the alphabetical cut at NAD+ 500mg is un-rendered pagination and MUST NEVER BE PUBLISHED AS A CATALOG GAP. /lab-results/ article:modified_time is still 2026-08-18T13:12:56-06:00 - eleven days - BUT THIS IS METADATA ONLY: the page carries new August lots uploaded under /2026/08/ (...-2608-2708), so the content is fresher than the stamp. Downgrading on a stale timestamp would have been an error; NOT SCORED. THE COUPON AGAIN COULD NOT BE TESTED AND THAT IS RECORDED AS A LIMITATION, NOT A PASS: applying WATCHDOG20 requires a POST and the GET attempt was refused by the fetcher's provenance guard. STANDING ITEMS UNCHANGED, none scored: static star-rating.png served identically on every tile with bare review integers and no linked corpus; '(c)2026 Precision Peptides' footer collision on a site branded Precision RESEARCH Peptides; Venmo preference; the 'As Seen On' caption 'These publications have covered peptide research and benefits' - 'benefits' describes the publications, not the products, and is far too thin to score; the open Trustpilot allegation, readable but UNDATED and a single unverified account, not scored and not publishable as fact. FREEDOM DIAGNOSTICS CROSS-CUT WIDENED: Prime Lab's newly-published COA images and Kaia's homepage FAQ both name this same lab, so the user list across our directory is now PRP, Nationwide, Kaia and Prime Lab - FOUR listings on ONE lab that holds no ISO/IEC 17025 and makes no accreditation claim of any kind. PRP makes no accreditation claim, so nothing is disqualifying, but its COAs should be spot-checked against the lab's public lookup rather than trusted on face, and CLIA #14D2263999 belongs to a DIFFERENT entity and must never be attributed to it. Tested FIRST and to the SAME standard as every other vendor despite carrying the WATCHDOG20 coupon. || PRIOR: 2026-08-28: ALL SIX HOLD AT PASS on first-hand read of /, /shop/ and /lab-results/. The fulfilment line is BYTE-IDENTICAL across all three pages: 'Orders placed by 4:30 PM CT ship the same day, Mon-Fri.' COA coverage remains the best in the directory: 25 lot-tied product rows / 33 distinct lot codes against 16 SKUs rendered on /shop/. /lab-results/ article:modified_time is STILL 2026-08-18 - TEN DAYS, no new lots; not a defect, but now worth watching. YESTERDAY'S /shop/ TRUNCATION FINDING IS SOFTENED IN THE VENDOR'S FAVOUR AND MUST NOT BE PUBLISHED AS A CATALOG GAP: /shop/ renders exactly 16 products in strict alphabetical order ending at NAD+ 500mg, so TB-500, Sermorelin Acetate, SS-31, PT-141 and Tesamorelin all fall after 'N'. Because the cut falls cleanly at an alphabetical boundary and the extractor strips JS pagination controls, this is at least as likely to be an unrendered page 2 as a genuine gap. NOT SCORED; needs one browser check before publication either way. THE COUPON COULD NOT BE TESTED AND THAT IS RECORDED AS A LIMITATION, NOT A PASS: applying WATCHDOG20 requires a POST to the cart and the GET attempt was refused by the fetcher's provenance guard. STANDING ITEMS UNCHANGED, none scored: static star-rating.png served identically on every tile with bare review integers and no linked corpus; '(c)2026 Precision Peptides' footer collision on a site branded Precision RESEARCH Peptides; Venmo preference. The open Trustpilot allegation ($43 quoted / $118 charged / $85 retroactive 'international shipping' for a Puerto Rico address) has readable text but remains UNDATED and a single unverified account - not scored, not publishable as fact. FREEDOM DIAGNOSTICS CROSS-CUT UNCHANGED: the lab makes no accreditation claim of any kind, holds no ISO/IEC 17025, and CLIA #14D2263999 belongs to a DIFFERENT entity and must not be attributed to it; PRP makes no accreditation claim, so nothing is disqualifying, but its COAs should be spot-checked against the lab's public lookup rather than trusted on face. Tested FIRST and to the SAME standard as every other vendor despite carrying the WATCHDOG20 coupon. || PRIOR: 2026-08-27: ALL SIX HOLD AT PASS on first-hand read of /, /shop/ and /lab-results/. Yesterday's cutoff fix HOLDS and is now byte-identical across all three pages: 'Orders placed by 4:30 PM CT ship the same day, Mon-Fri.' Footer disclaimer identical on all three. BEST COA COVERAGE IN THE DIRECTORY, verified first-hand: 16 live SKUs on /shop/ against 25 lot-tied COA entries in /lab-results/ - every live SKU is lot-matched, and the COA table OVER-covers with three products not in the shop (SS-31, PT-141, Tesamorelin). /lab-results/ article:modified_time still 2026-08-18 - nine days, no new lots; not a defect, but worth watching if it stretches past a month. ONE NEW MINOR, recorded not scored: TB-500 and Sermorelin Acetate are featured on the homepage and have COAs on file but do NOT render on /shop/, which appears truncated after NAD+ with no pagination control - a DISPLAY gap, not a documentation gap; worth raising with the vendor. THE OPEN TRUSTPILOT ALLEGATION NOW HAS READABLE TEXT AND IT IS UNFAVOURABLE - RECORDED ANYWAY. A locale-mirror workaround (it.trustpilot.com) finally surfaced review bodies after six consecutive bot-blocks on www.trustpilot.com. The complaint reads: $43 quoted, $118 charged the next day, the on-site invoice retroactively amended to add $85 'international shipping' for a reviewer in PUERTO RICO (domestic US), 8 unanswered emails, phone unreachable, nothing delivered, chargeback pursued. IT REMAINS UNDATED - the mirror strips review dates - and it is a single unverified customer account on a page showing only ~9 reviews, mostly positive. NOT SCORED, and it must not be published as fact. But it is now specific enough to put to the vendor directly, and that is the recommendation. FREEDOM DIAGNOSTICS CROSS-CUT UPDATED, AND THE CLIA PART IS RETRACTED: the CLIA #14D2263999 record belongs to 'Freedom Diagnostic Testing, PLLC' (Hillsboro IL, Certificate of Waiver, NPI-listed as phlebology) and was merged onto the Franklin TN peptide lab by a third-party aggregator matching on a near-identical name. The number should NOT be attributed to the peptide lab at all. What survives: NO ISO/IEC 17025 accreditation, and the lab's own homepage has CHANGED - the prior 'Compliant with ISO 9001' and GLP-'principles' language is gone, replaced by '42,378+ public COAs' and '100% independent' with no accreditation claim of any kind. PRP makes no accreditation claim, so nothing is disqualifying here; its COAs should be spot-checked against the lab's public lookup rather than trusted on face. STANDING ITEMS UNCHANGED, none scored: static star-rating.png served identically on every tile with bare review integers and no linked corpus; '(c)2026 Precision Peptides' footer collision; Venmo preference; the 'As Seen On' caption containing the word 'benefits', which refers to the publications rather than the products and is far too thin to score. Tested first and to the same standard as every other vendor despite carrying the WATCHDOG20 coupon. || PRIOR: 2026-08-26: ALL SIX HOLD AT PASS on first-hand read (/shop/ + /lab-results/). A CARRIED MINOR RESOLVES IN THE VENDOR'S FAVOUR: yesterday's cutoff-time discrepancy is FIXED - both /shop/ and /lab-results/ now read verbatim 'Orders placed by 4:30 PM CT ship the same day, Mon-Fri.' Remediated inside 24 hours. SECOND RETRACTION, ALSO IN THE VENDOR'S FAVOUR: the 2026-08-23 characterisation of an 'identical ~15% strike-through on every product' as 'permanent discount theater' NO LONGER HOLDS and should not be carried forward - discounts are now clearly differentiated (GHK-Cu 89.00->50.00, GLOW 119.00->70.00, KLOW 149.00->89.40, BPC-157 65.00->60.00, AOD-9604 95.00->60.00) and GLP-2T / GLP-3R carry open price ranges (75.00-95.00 / 90.00-115.00) with no strike-through at all. 16 live SKUs, every one lot-covered in /lab-results/. COA page modified_time still 2026-08-18 - no new lots in 8 days; the August set holds and is lot-tied (SS-31 2S10-2608-2708, PT-141 PT-14110-2608-2708, Tesamorelin TESA10-2608-2708, Bac Water BW10-2608-2708). Footer RUO disclaimer verbatim. STANDING ITEMS UNCHANGED, none scored: static star-rating.png served identically on every tile with bare review integers and no linked corpus (2367 Bacteriostatic Water, 1683 KLOW, 1369 GLOW, 1275 BPC-157, 1012 GLP-2T, 958 GLP-S, 849 GLP-3R, 737 MOTS-C); '(c)2026 Precision Peptides' footer collision; Venmo preference; Trustpilot pricing complaint ($118 vs $43) STILL UNVERIFIABLE, fourth consecutive bot-block, carried not resolved. FREEDOM DIAGNOSTICS CROSS-CUT SHARPENED AND IT TOUCHES THIS VENDOR: read first-hand on the lab's own site today, Freedom Diagnostics claims only 'Compliant with ISO 9001 Quality Management Principles' and 'Good Laboratory Practice (GLP) Quality Standard Principles' - self-declared compliance language, NOT third-party accreditation, and NO ISO 17025 claim appears anywhere on the lab's own site. CLIA #14D2263999 does match an active record but for 'Freedom Diagnostic Testing, PLLC', a Certificate of WAIVER, at Hillsboro IL - not the Franklin TN address reported for the peptide lab (SECONDARY, unverified, state mismatch unresolved). A CLIA waiver authorises waived-complexity clinical tests on human specimens and is no evidence of competence for HPLC/LC-MS purity work. In the lab's favour, its public COA lookup IS real and reachable (searchable by Search Code / Accession Number / Company Name, site claims 'Over 40,000 public COAs'). Nothing disqualifying for PRP - PRP makes no ISO claim - but its COAs should be spot-checked against that public lookup rather than trusted on face, and PRP must never be allowed to describe the lab as ISO-accredited. Recorded, not scored. Tested first and to the same standard as every other vendor despite carrying the WATCHDOG20 coupon. || PRIOR: 2026-08-25: ALL SIX HOLD AT PASS on first-hand read (homepage + /shop/ + /lab-results/). COA page modified_time still 2026-08-18 - no new lots since yesterday; the August set holds and is lot-tied (SS-31 2S10-2608-2708, PT-141 PT-14110-2608-2708, Tesamorelin TESA10-2608-2708, Bac Water BW10-2608-2708). Explicit per-vial pricing with variant ranges (GLP-3R $90.00-$115.00); entry gate verbatim 'RESEARCH USE ONLY - NOT FOR HUMAN OR ANIMAL USE'. NEW MINOR, RECORDED NOT SCORED: the same-day cutoff banners disagree across pages - /shop/ says 'Ships Same Day if Ordered by 3 PM CT', /lab-results/ says 'Orders placed by 4:30 PM CT'. A copy inconsistency, not a pricing or claims defect, but it is the kind of thing a buyer relies on; worth raising with the vendor. Static star-rating.png review counts persist unchanged (2367 on Bacteriostatic Water etc) with no linked review corpus - same standing marketing-claim item, moves nothing. The Trustpilot pricing complaint ($118 charged vs $43 quoted) is STILL UNVERIFIABLE - direct fetch returned an empty body again today, third consecutive bot-block. Carried, not resolved, not scored. Disambiguation from precision-peptide.com / precisionpeptides.com / precisionpeptidesusa.com holds. Standing items unchanged (Venmo preference, '(c)2026 Precision Peptides' footer collision). SECTOR CROSS-CUT RAISED TODAY AND IT TOUCHES THIS VENDOR: Freedom Diagnostics, which issues this vendor's COAs, was searched directly for the first time - NO ISO/IEC 17025 accreditation found, reported to hold CLIA #14D2263999 only (SECONDARY, unverified). No forgery or alteration allegation against the lab itself was found anywhere, and it runs a public COA lookup (reported 40,000+ searchable certificates) which is a real integrity point. Nothing disqualifying, but PRP's COAs should be spot-checked against that public lookup rather than trusted on face, and PRP should not be allowed to describe the lab as ISO-accredited if it ever does. Recorded, not scored. || PRIOR: 2026-08-24: ALL SIX HOLD AT PASS on first-hand read (homepage + /lab-results/). RUO/21+ Waave gate and footer disclaimer verbatim; prices public ($41.65-$75.65 featured range); /lab-results/ up [...earlier history truncated - see compliance-reports/ for the full record...]
Customer service excellence Live-tested
Answered liveReplied within hoursReplied within minutes
Operator-tested 2026-07-09 across phone, email, text. Re-tested periodically — not part of the automated daily scan. Feeds the Trust Score.

Automated daily review, human-gated before any public flag; customer-service is operator-tested. Editorial, never for sale.

Independent lab reports

16 COAs · Freedom Diagnostics

Third-party COAs for each batch, tested by Freedom Diagnostics (HPLC purity + LC-MS identity). Codes normalize to their compound — e.g. GLP-2TTirzepatide.

Compound (verified identity)Labeled asPurityIdentityLotReport
AOD-9604
CAS 221231-10-3
AOD-9604 5mg 99.52% ✓ Confirmed AOD9604-2606-2706 View COA ›
NAD+
CAS 53-84-9
NAD+ 500mg 99.91% ✓ Confirmed NAD+-2606-2706 View COA ›
Retatrutide
CAS 2381089-83-2
RT 20mg 99.87% ✓ Confirmed GLP3R20-2606-2706 View COA ›
Tirzepatide
CAS 2023788-19-2
TR 10mg 99.93% ✓ Confirmed GLP2T10-2606-2706 View COA ›
BPC-157
CAS 137525-51-0
BC 10mg 99.23% ✓ Confirmed BPC10-2606-2706 View COA ›
GLOW
Blend · multi-compound
GLOW 70mg 99.63% ✓ Confirmed Glow70-206-2706 View COA ›
Tirzepatide
CAS 2023788-19-2
GLP-2T 20mg 99.84% ✓ Confirmed GLP2T20-2606-2706 View COA ›
Ipamorelin
CAS 170851-70-4
IPAMO 10mg 99.64% ✓ Confirmed IP10-2606-2706 View COA ›
BPC + TB
Blend · multi-compound
BPC 5mg + TB 5mg 99.16% ✓ Confirmed BB10-2606-2706 View COA ›
GHK-Cu
CAS 49557-75-7
GHK-CU 100mg 99.66% ✓ Confirmed CU100-2606-2706 View COA ›
MOTS-C
CAS 1627580-64-6
MOTS C 10mg 99.72% ✓ Confirmed MS10-2606-2706 View COA ›
CJC-1295 + IPAMO
Blend · multi-compound
CJC-1295 + IPAMO 99.89% ✓ Confirmed CP10-2606-2706 View COA ›
Sermorelin
CAS 86168-78-7
SERMO 5mg 99.29% ✓ Confirmed SMO5-2606-2706 View COA ›
TB-500
CAS 77591-33-4
TB500 5mg 99.10% ✓ Confirmed BT5-2606-2706 View COA ›
Epithalon
CAS 307297-39-8
Epithalon 40mg 99.85% ✓ Confirmed ET40-2606-2706 View COA ›
IGF-1 LR3
CAS 946870-92-4
IGF-1LR3 1mg 99.71% ✓ Confirmed IG1-2606-2706 View COA ›

Reports are published as received and independently issued — not a health or safety endorsement.

Prices by peptide

12 listed vials · our dated index · lowest first
PeptideVialPricevs market median (per-mg)
BPC-157
Recovery
10 mg $50 31% below median Compare all vendors ›
Ipamorelin
Growth
10 mg $62.90 16% below median Compare all vendors ›
Semaglutide
Weight-loss
10 mg $65 28% below median Compare all vendors ›
NAD+
Longevity
500 mg $65 32% below median Compare all vendors ›
Epithalon
Longevity
40 mg $67.15 62% below median Compare all vendors ›
MOTS-C
Energy
10 mg $69 0% below median Compare all vendors ›
Tirzepatide
Weight-loss
10 mg $70 22% below median Compare all vendors ›
GHK-Cu
Cosmetic
100 mg $75.65 11% below median Compare all vendors ›
IGF-1 LR3
Growth
1 mg $75.65 6% below median Compare all vendors ›
AOD-9604
Weight-loss
5 mg $80 33% above median Compare all vendors ›
Tirzepatide
Weight-loss
20 mg $90 50% below median Compare all vendors ›
Retatrutide
Weight-loss
10 mg $95 21% below median Compare all vendors ›

About Precision Research Peptides

Precision Research Peptides supplies research-grade peptides for laboratory and research use only. Every batch is sent to an independent lab for HPLC purity and LC-MS identity confirmation, and the resulting Certificates of Analysis are published in full — nothing hidden, nothing self-reported. Cold-chain shipping, lot traceability, and responsive support are standard.

Enhanced profile — presentation and links are provided by the vendor. Content here does not affect the Trust Score, rating, or ranking, which stay editorial and are never for sale.

Trust Score breakdown

disclosed methodology · never for sale
ComponentPointsDetail
Price competitiveness
38 / 40 Like-for-like per-mg vs the market median: at/below median on 10 of 11 compounds this vendor sells.
Verification tier
24 / 30 COA-Verified — 16 third-party lab reports published. Full Verified re-test adds 6 pts.
COA recency
14 / 20 Newest published COA is 64 days old.
Customer service excellence
10 / 10 Live-tested pass across phone + email + text on 2026-07-09.

Score = points earned ÷ points available. Components activate as real data loads; the score can never be bought.

Frequently asked

Is Precision Research Peptides verified?
COA-Verified — 16 third-party lab reports from Freedom Diagnostics are published on this page; independent re-testing for the full badge is ongoing. Verification is never for sale.
What is the rating based on?
Nothing yet — ratings appear only from real, moderated reviews. They are never invented or influenced by payment.
How we rank vendors. Trust first: verified lab testing and screened reviews — never who pays. Read the standard in what "Verified" means, or check Scam Watch for flagged vendors.