Search peptides — top sellers first
Search peptides — top sellers first
Search peptides — top sellers first
Mimics LH to switch on testosterone production
Made in USA — Synthesized in our cGMP-compliant US facility
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Frequently bought together
Researchers usually add these to complete the protocol.
BAC Water · 3ml
Essential · extras
GHK-CU · 50mg
recovery
Melanotan 2 · 10mg
Tanning
HCG · 10,000 iu
Certificate of analysis
We don't publish a brand-wide spec sheet and call it a “COA.” The certificate you receive references the actual lot number stamped on your vial — with the raw chromatograms attached.
Freedom Diagnostics
Independent analytical lab
Certificate of Analysis
RESULT · PASS
Analytical results
HPLC Chromatogram
Purity
Alex Johnson
Principal Chemist
Scanned 11×
Know your compound
HCG is a glycoprotein hormone the body naturally makes during pregnancy. In the lab it's prized because it acts like luteinizing hormone (LH), the signal that tells the testes to make testosterone.
Because it docks onto the same receptor as LH, HCG has become one of the most-studied tools in hormone research — a reliable way to trigger the Leydig cells (the testosterone factories in the testes). Researchers also study its glycoprotein structure, its many natural forms, and its long half-life in the body.
For research use only — not for human or veterinary use.
The research
The published findings behind this compound — the headline numbers, in plain terms, each cited to source. Preclinical results are directional (animal / in-vitro) and shown for context, not as therapeutic claims.
In endocrine research models, HCG docks onto the same receptor as LH and drives the testes' Leydig cells to make more testosterone — which is why it's a go-to research tool for triggering testosterone output.
Directional finding — relative heights only.
Human pharmacokinetic studies describe HCG staying in the bloodstream far longer than LH — its signal lingers well after LH would have cleared.
Relative clearance; illustrative of prolonged HCG persistence.
Structural analysis shows HCG isn't one molecule but several natural glycoforms — regular, hyperglycosylated, and pituitary — each linked to different biological roles.
Illustrative split of described glycoforms, not measured abundance.
In lab and clinical thyroid assays, HCG shows weak TSH-like activity at high concentrations — a measurable but modest off-target effect on the thyroid receptor.
Directional — relative strength of thyroid stimulation.
Mechanism
A glycoprotein hormone studied as a reliable tool for triggering the body's testosterone factory.
Studied for docking the luteinizing-hormone receptor, the same target as natural LH.
Investigated for stimulating the testes' Leydig cells to produce testosterone.
Researched for its extended activity and its many natural glycoprotein forms.
For research use only. Mechanisms described reflect published research literature.
The process
Synthesized
Produced under controlled manufacturing with documented, repeatable processes.
HPLC purity
An independent lab reports the exact purity of every lot — a number, never a 'passes'.
Mass-spec identity
Molecular weight confirms the exact sequence is what the label says.
COA published
The certificate is posted to the open library, by lot, before the vial ships.
Best sellers
FAQ
Common questions about HCG
The COA guarantee
Have any lot independently re-tested. If the results don't match the published certificate, we refund the order in full — no returns, no questions.
Order with coverThird-party tested
An independent, accredited lab — no commercial interest in the result.
A COA on every lot
A lot-specific certificate ships with each vial, archived by batch.
Test it yourself → refund
Re-test any batch at any lab. A mismatch is a full refund.
