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The Roundup

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vendor matchup · audited

Loti Labs vs Summit Biotech

Two audits, side by side. Composite, subscores, shipping, payment, coupons. Loti Labs takes the higher composite this cycle.

§ 01

Composite score

loti-labs

Loti Labs

70/100

US peptide vendor (Sterling Path LLC) carrying retatrutide, tirzepatide, semaglutide plus healing peptides. Same-day shipping, four payment methods. Lab identity not named.

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vs
summit-biotech

Summit Biotech

55/100

Operator received an FDA warning letter on December 10, 2024 as "Summit Research Peptides," then rebranded to Summit Biotech without disclosing the prior identity on the new site. Login-walled catalog, code-name SKUs for the FDA-cited compounds, and the cheapest per-mg pricing in our seven-vendor index on Tirzepatide, Retatrutide, and Semaglutide. ~90% of COAs are real Janoshik public-database links.

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§ 02

Subscore breakdown

metricLoti LabsSummit Biotech
composite
weighted avg
●70/10055/100○
purity / coa
○58/10070/100●
shipping
domestic days
●3.0d5.0d○
pricing
○76/10095/100●
support
●70/10040/100○
last tested
·2026-05-202026-05-09·
payment
·card, crypto, achcrypto, card·
§ 03

Catalog overlap

only loti-labs
cjc-1295ipamorelinmk-677epithalon
both
retatrutidetirzepatidesemaglutidecagrilintidebpc-157tb-500mots-c
only summit-biotech
ghk-cutesamorelin
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