Head-to-head · same rubric · verified 24 October 2026

Purgo Labs vs Blue Sky Peptide

Verdict: Purgo Labs, on the evidence: 10/10 rubric points against 6/10. Blue Sky Peptide is stronger on 3 points listed below.

Our pick · partner

Purgo Labs

4.8 (101 reviews)

Lab: SteriGenix

Non-partner

Blue Sky Peptide

Trustpilot profile removed

Lab: MZ Biolabs

Purgo
ahead on the rubric: 8/11
vials Purgo cheaper at list: 11/11
vials Purgo cheaper after codes: 3
points Blue Sky Peptide is stronger on

20% off every order with codeaffiliate code, disclosed · not a ranking input

Visit Purgo Labs

Disclosure: Purgo Labs is our affiliate partner; we earn nothing from Blue Sky Peptide. Scores come from the public rubric, which has no partnership input.

Research use only. Compound Review scores vendors on documentation — laboratory certificates, lot records, pricing and company identity. Nothing on this page is guidance on human or veterinary use, dosing or health outcomes.

Where each vendor is stronger

Computed from the rubric, prices and review record — never curated

Purgo Labs

Certificates verifiable at the lab, not just the vendor — Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Independent review base (50+ on an external platform) — 4.7 / 101 on Trustpilot, claimed; three reviews below four stars, all replied to (complaint read 9 Oct 2026; was 4.7 / 99 on 2 Oct)
No contradictions among its own claims — No contradictions found across site claims (checked Aug 2026)
Publishes a legal entity and street address — PurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026)
Lower list price on 8 of 11 like-for-like rows.
Larger independent review base: 4.8 (101 reviews) vs none on record.

Blue Sky Peptide

Lower list price on 3 of 11 like-for-like rows we have on record (see table).
MZ Biolabs (Tucson, AZ) printed on the certificates in the COA library — read 24 Oct 2026
Certificates carry lot numbers (e.g. 6UQ0126, analysed 18 Jun 2026); the library invites buyers to ask for previous batch COAs

The 10 criteria, side by side

10/10 vs 6/10 · one point each, no weighting

Named lab

Purgo

SteriGenix and Freedom Diagnostics named per lot

Blue

MZ Biolabs (Tucson, AZ) printed on the certificates in the COA library — read 24 Oct 2026

Lab-hosted COAs

Purgo

Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com

BlueNot awarded

Per-lot COAs

Purgo

Lot numbers (e.g. PL-BPC-05) with test dates per batch

Blue

Certificates carry lot numbers (e.g. 6UQ0126, analysed 18 Jun 2026); the library invites buyers to ask for previous batch COAs

Net content

Purgo

Measured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label)

Blue

Certificate reports measured quantity per vial: 5.37 mg BPC-157 and 2.41 mg thymosin beta-4, combined purity 99.89%

Ungated

Purgo

COAs on product pages without login

Blue

Catalog, prices and the COA library readable without an account (24 Oct 2026)

Review base

Purgo

4.7 / 101 on Trustpilot, claimed; three reviews below four stars, all replied to (complaint read 9 Oct 2026; was 4.7 / 99 on 2 Oct)

BlueNot awarded

Consistent claims

Purgo

No contradictions found across site claims (checked Aug 2026)

BlueNot awarded

Sized pricing

Purgo

Product pages state vial size with price (e.g. BPC-157 10mg at $44.99; 24 dated size+price readings on record)

Blue

Sizes stated with prices on every listing (BPC-157 5mg $42.87; TB-500 5mg $43.97; NAD+ 500mg $77.52), read from the category page on 24 Oct 2026

Entity + address

Purgo

PurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026)

BlueNot awarded

Clean record

Purgo

No on-site review badge contradicting the independent record; card payment accepted; no regulator action found (checked 6 Sep 2026)

Blue

No on-site review score or badge found; no regulator action found (24 Oct 2026); payment rails not examined

Like-for-like prices

price history across vendors

Vial	Purgo · after HEALTH	Blue Sky Peptide	Lower
Epithalon 10mg	$19.19 $23.99read 2026-09-23	$33.52read 2026-10-24	Purgo Labs
GHK-Cu 50mg	$23.99 $29.99read 2026-10-02	$45.62read 2026-10-24	Purgo Labs
MOTS-c 10mg	$39.99 $49.99read 2026-10-02	$45.62read 2026-10-24	Purgo Labs
NAD+ 500mg	$47.99 $59.99read 2026-10-02	$77.52read 2026-10-24	Purgo Labs
PT-141 10mg	$23.99 $29.99read 2026-10-02	$30.22read 2026-10-24	Purgo Labs
Retatrutide 10mg	$47.99 $59.99read 2026-10-02	$109.97read 2026-10-24	Purgo Labs
Retatrutide 20mg	$95.99 $119.99read 2026-10-02	$164.99read 2026-10-24	Purgo Labs
Selank 10mg	$27.99 $34.99read 2026-10-02	$32.97read 2026-10-24	Purgo Labs
Semax 10mg	$27.99 $34.99read 2026-10-02	$32.97read 2026-10-24	Purgo Labs
Tesamorelin 10mg	$55.99 $69.99read 2026-10-02	$88.52read 2026-10-24	Purgo Labs
Tirzepatide 10mg	$39.99 $49.99read 2026-10-02	$93.47read 2026-10-24	Purgo Labs

Only vials both vendors list at the same size, read on each vendor's product page on the date shown. "After code" is list × the code's stated discount — a calculation, labelled as one; stacking with sale pricing is not cart-tested.

What we found at Blue Sky Peptide

Read 24 October 2026 on the vendor's own pages

Prices look low because every listing is shown at 45% off a list price; the sale price is the real price. Six of ten.

Evidence ledger · read 24 October 2026

6 verified1 flag1 could not verify

Verified — what we opened, with the date

VerifiedMZ Biolabs (Tucson, AZ) printed on the certificates in the COA library

read 24 Oct 2026

—

VerifiedCertificates carry lot numbers (e.g. 6UQ0126, analysed 18 Jun 2026)

the library invites buyers to ask for previous batch COAs

—

VerifiedCertificate reports measured quantity per vial

5.37 mg BPC-157 and 2.41 mg thymosin beta-4, combined purity 99.89%

—

VerifiedCatalog, prices and the COA library readable without an account

(24 Oct 2026)

—

VerifiedSizes stated with prices on every listing (BPC-157 5mg $42.87

TB-500 5mg $43.97; NAD+ 500mg $77.52), read from the category page on 24 Oct 2026

—

VerifiedNo on-site review score or badge found

no regulator action found (24 Oct 2026); payment rails not examined

—

Flag — read before ordering

FlagTrustpilot has removed the blueskypeptide.com profile ('goes against our guidelines', read 24 Oct 2026)

No company name or address appears on the contact, about or terms pages; the contact page is a form only. The certificates are vendor-hosted from MZ Biolabs, which has no public lookup. The blend certificate does not match its listing: filed under the 5 mg + 5 mg blend, titled 4 mg, and measuring 5.37 mg plus 2.41 mg, which fits neither label. Every price is shown as '45% off' a list price, which makes the 'list' figures meaningless as a reference.

—

Could not verify — not on the record either way

Could not verifyAn independent review record

Trustpilot has removed the profile ('goes against our guidelines', 24 Oct 2026).

—

No company name or legal entity published on the pages we read (24 Oct 2026).

Certificates we opened at Blue Sky Peptide

COA library

Certificate of analysis · as we read it

MZ Biolabs

Vendor-hosted document · HPLC-UV-MS

Read 24 Oct 2026

Product

BPC-157 · 5mg label

Lot / batch

6UQ0126

Report ID

not printed

Test date

18 Jun 2026

Purity

99.89%

Measured

5.37mg

Net content vs label107.4% of 5mg

0label 5mg130%

One vial measured.

No lab-side verification

No lab-side lookup for this reportWhere we opened it Transcribed by Compound Review; the laboratory's report is the record.

Blend certificate: filed under 'BPC-157 5mg + TB500 5mg'; report titled 'BPC-157, Thymosin beta4 4 mg'; thymosin beta-4 measured 2.41 mg. Vendor-hosted; MZ Biolabs has no public lookup.

Where Blue Sky Peptide ranks by compound

Blue Sky Peptide appears in 19 of our compound rankings. Each ranking orders every scored vendor that sells the compound by rubric score, then verified price per mg.

#10 of 11among the best SS-31 vendors · $49.47 at 10mg
#13 of 15among the best Semaglutide vendors
#13 of 14among the best Sermorelin vendors
#13 of 14among the best Epithalon vendors · $33.52 at 10mg
#14 of 16among the best PT-141 vendors · $30.22 at 10mg
#14 of 16among the best DSIP vendors · $25.82 at 5mg

Score history and the caveats

A score only moves when the evidence does

2026-10-246/10 — first assessment (rubric v2); not awarded: lab-hosted (vendor-hosted PDFs; MZ Biolabs has no public lookup), review-base (Trustpilot profile removed — 'goes against our guidelines' — 24 Oct 2026), claims-consistent (the certificate filed under the 'BPC-157 5mg + TB500 5mg' blend is titled 4 mg and measures 5.37 mg + 2.41 mg, matching neither listing), identity (no company name or address on any page we read)

Purgo Labs: the caveat

Smaller independent review base than several competitors (101 reviews). The catalog is peptide-focused, so researchers also working with SARMs or broader research chemicals will need a second supplier.

Blue Sky Peptide: the caveat

Trustpilot has removed the blueskypeptide.com profile ('goes against our guidelines', read 24 Oct 2026). No company name or address appears on the contact, about or terms pages; the contact page is a form only. The certificates are vendor-hosted from MZ Biolabs, which has no public lookup. The blend certificate does not match its listing: filed under the 5 mg + 5 mg blend, titled 4 mg, and measuring 5.37 mg plus 2.41 mg, which fits neither label. Every price is shown as '45% off' a list price, which makes the 'list' figures meaningless as a reference.

Where the evidence points

Purgo Labs 10/10

We earn nothing from Blue Sky Peptide. Purgo Labs holds every rubric point — certificates checkable at the lab, measured net content per lot — and is cheaper after codes on 11 of 11 like-for-like vials.

20% off every order with

Visit Purgo Labs

Affiliate links, disclosed. Purgo Labs is our primary partner; we earn nothing from Blue Sky Peptide. Partnership is not a rubric input.

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Questions readers ask

Is Purgo Labs better than Blue Sky Peptide?

Purgo Labs, on the evidence: 10/10 rubric points against 6/10. Blue Sky Peptide is stronger on 3 points listed below. Every point is a fact you can check on either vendor's site; both are scored by the same published rubric.

Is Blue Sky Peptide legit?

Blue Sky Peptide scores 6/10 on our rubric, has no independent record (its Trustpilot profile has been removed), and names its lab (MZ Biolabs (on certificates)). Caveat: Trustpilot has removed the blueskypeptide.com profile ('goes against our guidelines', read 24 Oct 2026). No company name or address appears on the contact, about or terms pages; the contact page is a form only. The certificates are vendor-hosted from MZ Biolabs, which has no public lookup. The blend certificate does not match its listing: filed under the 5 mg + 5 mg blend, titled 4 mg, and measuring 5.37 mg plus 2.41 mg, which fits neither label. Every price is shown as '45% off' a list price, which makes the 'list' figures meaningless as a reference.

Which is cheaper, Purgo Labs or Blue Sky Peptide?

On the 11 compound-and-size rows where we have dated prices from both, Blue Sky Peptide lists lower on 3 and Purgo Labs on 8. Purgo's list prices drop 20% with code HEALTH.

Do you earn money from either vendor?

Purgo Labs is our affiliate partner and we earn a commission on referred orders; we earn nothing from Blue Sky Peptide. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.