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VendorsMyBioSource
Layer A — cited: COA practices, testing, enforcement, provenanceLayer B — disclaimed: online sentiment, community reportsIndependence firewall: the Trust Index is computed from cited facts only — never sold, never sorts the directory.
V0 · V1 · V2 · V3 · V4

Overview

Independence-firewalled vendor profile · Trust Index computed from cited facts

MyBioSource

www.mybiosource.comActiveResearch use only

US-facing research-peptide supplier, research-grade, founded 2006. Publishes certificates of analysis. Identity and claims are vendor-stated unless cited. Research use only.

Publishes COAsDomestic shipping
~2000000products listed
—Trustpilot
2006founded
Communityconfidence
2026-06-27 as of
Vendor Trust Index
/100
Thinly Documented

Some cited facts on file, but not enough independently-verified evidence to compute a precise index. No adverse records on file.

Coverage84%
ConfidenceModerate
Cited facts40

A transparency readout of 40 cited facts — never sold, never sorts the directory; not a safety verdict (RUO). How it’s computed →

Catalog breadth

Cited
~2000000
products in the catalog

External rating

—
No data available

COA policy

Cited
Yes
publishes COAs

Operating status

Cited
Active
as of 2026-06-27

Trust Index breakdown

DerivedV3

The Trust Index weighs five evidence pillars — purity claims-vs-reality, testing transparency, enforcement conduct, operational accountability and reputation integrity — into a single 0–100 factor. Nothing here can be bought.

Thinly Documented. Cited facts on file, but no allowlisted independent assay yet — a precise index is withheld. A precise number is withheld rather than guessed — absence of evidence is never shown as a low score.

Evidence at a glance

DerivedV3
Products listed
3
Publishes COAs
Yes
Independent tests tracked
2
Enforcement records
0
Cited sources
40

Methodology & independence

CitedV4
  • The Trust Index is computed only from cited facts — and can never be bought.
  • Sponsorship & affiliate are excluded by construction — they never move the score, sort, or inclusion.
  • Facts are dated and cited; absent data lowers confidence, never the score (absence isn’t evidence of bad).

No affiliate relationship with this vendor.

Legitimacy signals

DerivedV2
Official domain
www.mybiosource.com
Payment
Card · check · purchase-order
Third-party testing
Not confirmed
Published COAs
Yes
HQ disclosed
US-CA
Sponsored placement
No

Vendor details

CitedV1
Founded (claimed)
2006
Domain registered
2007-07-08
HQ
US-CA
Address
9188 Chesapeake Dr, San Diego, CA 92123 (physical); mailing PO Box 153308, San Diego, CA 92195-3308
Contact
sales@mybiosource.com
Ships from
US
Ships to
US, international
Categories
Antibodies · Monoclonal Antibodies · Polyclonal Antibodies · Secondary Antibodies · ELISA Kits · CLIA Kits · Assay Kits · Recombinant Proteins · Peptides · Synthetic Peptides · Biologically Active (Research Exemption) Peptides · Blocking Peptides · Molecular Biology Reagents
Grade claimed
research
Website
www.mybiosource.com

WHOIS: Company self-describes as founded in Vancouver, British Columbia in 2006 by three scientists, relocating its headquarters/operations to San Diego in 2007; Wikipedia and several directories cite a 2007 launch. The mybiosource.com domain was registered 2007-07-08 (NameCheap), consistent with the 2007 US relocation. Registrant identity is privacy-masked. who.is

Find them

V1

Verify you are on www.mybiosource.com — 1 domain variant exist; this is the one on record as current.

V5 · V6 · V7 · V8 · V9

Products & price

Vendor-listed prices, dated & cited — no ranking, no commission

Product catalog & pricelist

CitedV5

3 representative listings captured on 2026-06-27. Prices are vendor-listed and dated; price-per-mg is a unit price, not a ranking. No commission is earned and no vendor is ranked. Research use only.

CompoundPriceSizePrice / mgCOA
RERetatrutide (research peptide)Biologically Active (Research Exemption) Peptides
——
RERetatrutide (biochemical listing)Peptides
——
BPBPC-157 Pentadecapeptide (synthetic peptide)Synthetic Peptides
——

No product prices were captured — MyBioSource peptide/reagent prices are not exposed in search snippets and vendor product pages were not fetched. The vendor markets catalog reagents at 'discounts up to 60% over their nearest competitors' (marketing claim). Flat-rate shipping fees and Net-30 PO terms are documented; per-SKU peptide pricing requires a human catalog pass. Captured 2026-06-27.

Price-per-mg snapshot

DerivedV7
No data availableNo price series collected.

Deals & bulk pricing

V8
No data availableNo promotional or bulk pricing collected.

Price snapshot

DerivedV6
No data availableRequires price data.

Shipping & fulfillment

CitedV9
Ships from
US
Ships to
US, international
Domestic shipping
Yes
Ship speed
No data available
Carriers
FedEx (International Priority by default unless the customer supplies their own courier); US orders via FedEx
Cost
Flat-rate shipping (vendor-stated): $55 to California, $75 to the rest of the USA, $90 to Canada, $150 to most other international destinations
Payment
Card · check · purchase-order

Returns: Net-30 purchase orders carry a 2.0% finance charge on past-due invoices (vendor terms). Community reports (ResearchGate) allege refusal to refund non-working ELISA kits; formal written return/refund terms were not captured.

mybiosource.com

Watch & alerts

V30
  • Status-change & enforcement alerts
  • Add to a comparison set
V10 · V11 · V12

Quality & COA verification

COA & testing practices

CitedV10

What this vendor proves about identity, purity & potency

Publishes COAs
policy on record
Third-party tested
not on record
Independent tests tracked
2 on file
GMP / ISO claim
not on record
MyBioSource is primarily a broad-catalog research-reagent DISTRIBUTOR/reseller (antibodies, ELISA/CLIA kits, recombinant proteins) rather than a manufacturer. For peptides it offers catalog synthetic peptides and custom peptide synthesis 'to your specifications including purity requirements'; catalog synthetic-peptide pages state purity grades such as >95%, >97% or >98% by RP-HPLC (vendor-stated), and custom orders are described as QC'd by RP-HPLC for purity with MS for identity. It does NOT publish a public independent third-party COA repository or named testing lab in the manner of grey-market research-peptide vendors. For its ELISA kits, scientists on ResearchGate report kits are resold from undisclosed manufacturers and are not independently validated, and that the company will not name the underlying supplier.

Methods: RP-HPLC for purity and Mass Spectrometry for identity on synthetic/custom peptides (vendor-stated). No public independent third-party purity-testing program (Janoshik/Finnrick-style) found; ELISA kits are community-reported as resold and not independently validated..

COA repository · published lab results

No data availablePer-lot COA records have not been collected.

Independent test results

CitedV11

2 independent tests tracked — labs and findings as reported. No pass/fail tally is computed.

Peer-reviewed assay evaluation (via Wikipedia citation)
A peer-reviewed comparison of commercial assays found MyBioSource's oxyntomodulin ELISA (catalog MBS701592) 'yielded inconsistent results.' Independent academic evaluation of product performance, not a purity assay.
en.wikipedia.org
Peer-reviewed assay evaluation — Dubuisson et al. 2015 (via Wikipedia citation)
An investigation (Dubuisson et al., Journal of Diabetes and Its Complications, 2015) reported MyBioSource's Ad36 EIA kit (catalog MBS705802) produced false positives — 'all seronegative samples (as determined by SNA) were false positive.' Independent academic finding of poor specificity.
en.wikipedia.org

Authenticity & anti-spoofing

CitedV12

Official domain: www.mybiosource.com

Only order from the official domain. Research-chem vendors are frequently impersonated by typosquats — verify the URL before purchase.

Known domain variants

  • mybiosource.com — official · registered 2007-07-08 via NameCheap (privacy-masked registrant); expiry 2034-07-08
V13 · V14 · V15 · V16 · V17

Reputation & sentiment

Online sentiment

Community signalUGC · disclaimedV13

Forum sentiment: mixed · unverified

A coarse community read, not a measured score. Platforms can be gamed — corroborate.

Reddit & community

UGC · disclaimedV14

4 community mentions — disclaimed UGC, each linked. Sentiment is reported, not measured.

ResearchGate — 'Experience with mybiosource.com ELISA kits?'Negative
Scientists report poor ELISA-kit quality and that MyBioSource resells kits made elsewhere, cannot answer technical questions without first contacting the (undisclosed) supplier, ships kits that are not validated, and is unhelpful in troubleshooting. Multiple users describe refusal to refund and a 'Director of Technical Support' whose role is characterized as preventing refunds.
researchgate.net
ResearchGate — zebrafish ELISA kit reliabilityMixed
Thread asking whether MyBioSource zebrafish ELISA kits are reliable; responses are cautious/mixed about reproducibility.
researchgate.net
ResearchGate — abbexa / MyBioSource / Signalway comparisonMixed
Comparative thread where researchers weigh ELISA-kit experiences across MyBioSource and peer suppliers; sentiment mixed with quality-consistency caveats.
researchgate.net
Biocompare — antibody product reviewPositive
Layer B positive: a published researcher review of a MyBioSource DGAT1 antibody describes a clean, bright detection band. Single-product positive datapoint balancing the ELISA-kit criticism.
biocompare.com

Review sites

UGC · disclaimedV15

4 platforms on record — scores differ by scale; read the notes

Rating 'A+'; NOT BBB accredited; file opened 2015-04-21; ~18 years in business; listed at PO Box 153308, San Diego, CA

Algorithmic checker rates the site 'very likely not a scam / legit and reliable'; exact numeric trust score not captured. Not an endorsement of product quality. Unverified.

Review-aggregator page exists; score/count not captured via snippet. Unverified.

Layer B positive: a researcher review praises a MyBioSource DGAT1 antibody ('nice, clean, and bright band'). Single-product datapoint.

No Trustpilot profile surfaced in searches. Reputation is split by audience: algorithmic checkers (ScamAdviser) rate the site 'very likely legit' and BBB lists an 'A+' (non-accredited) rating, while working scientists on ResearchGate report poor ELISA-kit quality, resale of unvalidated kits from undisclosed suppliers, and refund refusals. Antibody-level feedback on Biocompare includes positive product reviews. Numeric ScamAdviser/Trustindex scores were not captured via search snippets.

bbb.org

User reviews

Not collectedUGC · disclaimedV16
No data availableNo first-party reviews have been collected for this vendor.

Press & media

V17
No press on recordEach item must be cited & verified before it appears
V18 · V19 · V20 · V21

Trust, risk & enforcement

Enforcement & legal history

CitedV18

Warning letters, raids, shutdowns, BBB actions — cited or omitted

No enforcement actions on record. No FDA warning letters, raids, recalls, or import alerts naming this vendor as of 2026-06-27. Absence of record is not a guarantee.

We publish negative records only with a source, and offer vendors a right of reply.

Buyer safety checklist

DerivedV19
  • Publishes COAs
  • Third-party tested
  • Accepts non-crypto payment
  • Has reship / refund policy
  • Clean enforcement record
  • Currently operating

4 of 6 checks clear · derived from vendor-stated data.

Operating status & continuity

CitedV20
Status
Active
Last confirmed
2026-06-27
US-facing
Yes
Domain history
1 variants on record
Known rebrands / aliases
Migrated to www.mybiosource.com (2007-07-08)

Company self-describes as founded in Vancouver, British Columbia in 2006 by three scientists, relocating its headquarters/operations to San Diego in 2007; Wikipedia and several directories cite a 2007 launch. The mybiosource.com domain was registered 2007-07-08 (NameCheap), consistent with the 2007 US relocation. Registrant identity is privacy-masked.

If they disappear: prepaid / crypto orders carry no recourse if any research-chem vendor changes domains or shuts down with little notice.

Scam & non-delivery reports

Community-reportedUGC · disclaimedV21
Refund refusal / unvalidated product (quality complaint) — Recurring ResearchGate accounts allege MyBioSource sold non-working / unvalidated ELISA kits, would not disclose the underlying manufacturer, and refused refunds. These are community quality/service complaints, not non-delivery fraud reports.
Community-reported (unverified) · researchgate.net

Community-reported & unverified by PeptideCompass — counts reflect what platforms display, not adjudicated findings.

V22 · V23 · V24

Compare & discover

Compare vendors

V22

See MyBioSource side-by-side with every vendor on the directory — COA practices, testing, shipping, enforcement history.

Similar vendors

V23
No data availableSimilar-vendor matching is not yet computed.

Best value for

V24

Cross-vendor price ranking is intentionally not computed

The Trust Index rates each vendor against a fixed evidence rubric — it never ranks vendors against each otheror sorts the directory. Naming a “best-value” vendor per compound would require exactly that cross-vendor sort, so we don’t. Compare the cited price-per-mg in the Products & price table yourself, or open a side-by-side comparison.
V25 · V26 · V27 · V28 · V29 · V31

Compliance, meta & tools

Jurisdiction & legality

CitedV25
Ships to
US, international
US-facing
Yes
Gating
Commercial links suppress where a compound is restricted in your region

Commercial CTAs are jurisdiction-gated; reference content stays visible everywhere (RUO).

Independence & disclosure

CitedV26
Affiliate
No
Sponsored placement
None
Effect on Trust Index
None — sponsorship & affiliate are excluded by construction

No affiliate or sponsorship relationship on record.

Data confidence & provenance

CitedV27
CommunityReview: needs_review
Reviewed by
PeptideCompass editorial
Sources
40 cited
Captured
2026-06-27
Provenance
web_research + adversarial_verification
View 40 sources

FAQ

CitedV31
Is MyBioSource legit?
MyBioSource, Inc. is an established San Diego, CA research-reagent distributor (self-described founding 2006 in Vancouver, relocated to San Diego 2007; domain registered 2007). It carries an 'A+' BBB rating (not BBB accredited) and is rated 'likely legit' by algorithmic checkers. It is a real, long-operating company. Separately, working scientists report quality concerns with its resold ELISA kits, and peer-reviewed studies have flagged specific assays for inconsistent results / false positives. No FDA warning letter, FTC action, or lawsuit was found in this crawl. PeptideCompass computes no vendor score — weigh the cited facts yourself. Research use only.
bbb.org
What does MyBioSource sell, and does it sell research peptides?
Its core catalog is broad life-science reagents — the site claims over 2 million products spanning antibodies (monoclonal/polyclonal/secondary), ELISA and CLIA kits, recombinant proteins and molecular-biology reagents. It also offers peptides: catalog synthetic peptides, custom peptide synthesis, and a 'Biologically Active Peptides (Research Exemption)' line that includes metabolic/GLP-class research peptides such as retatrutide and BPC-157, all labeled research use only. Research use only.
mybiosource.com
How does MyBioSource ship and take payment?
It ships from San Diego via FedEx (International Priority by default), with flat-rate fees of roughly $55 (California), $75 (rest of USA), $90 (Canada) and $150 (most other countries). Payment is by credit card (Visa/Mastercard/Amex/Discover), check, or purchase order on Net-30 terms (2% finance charge on past-due invoices). Research use only.
mybiosource.com
Are MyBioSource's products independently tested?
For synthetic/custom peptides the company states RP-HPLC purity and MS identity QC (vendor-stated) and synthesizes custom peptides to a requested purity. It does not publish an independent third-party COA repository or named lab the way grey-market peptide vendors do. For ELISA kits, researchers on ResearchGate report the kits are resold from undisclosed suppliers and are not independently validated. Research use only.
mybiosource.com

Citable summary (GEO)

DerivedV29

MyBioSource (www.mybiosource.com) is a US-facing research-peptide vendor. Publishes certificates of analysis. No enforcement actions on record. PeptideCompass Trust Index: Thinly Documented — Cited facts on file, but no allowlisted independent assay yet — a precise index is withheld.. Data is community and dated 2026-06-27. The Trust Index is an evidence-transparency readout of cited facts — not a safety verdict, never sold. Research use only.

JSON-LD: Organization · BreadcrumbList · FAQPage. Computed from cited facts, never sold.

Contribute, report & claim

V28
Reports are moderated · not verified by PeptideCompass