HCG Pen 5000 IU — reference profile

What this compound is

HCG is a glycoprotein hormone made of two subunits, alpha and beta. The alpha subunit is shared with several other hormones; the beta subunit is what makes it specific. Being glycosylated, it is a considerably more complex molecule than a synthetic peptide.

Molecular profile

Composition: Glycoprotein hormone, alpha and beta subunits. Molecular weight ≈ 36 700 Da.

Molecular weight is the figure used to confirm identity by mass spectrometry: the measured mass is compared against the value calculated from the sequence, and agreement within instrument tolerance is what establishes that the material is the intended molecule rather than merely a pure one.

What published research has examined

Published work concerns receptor binding, the endocrine pathways it participates in, and its long-standing use as an analytical marker. Strength is expressed in international units because activity, not mass, is the meaningful measure.

This is a description of what has been studied, not a claim about outcomes and not a suggestion that anyone should use it. Research findings in cell culture or animal models do not transfer directly to any other setting.

Format and handling

Pen format. The compound is the same as the vial presentation; the difference is the delivery device, not the chemistry.

Supplied lyophilized. Glycoproteins are generally more sensitive to handling than short synthetic peptides.

Storage conditions and the expiry date on the label describe material kept as specified. A vial left at ambient temperature has not been stored as specified, whatever the date says.

Documentation and verification

Each batch carries a Certificate of Analysis stating purity, identity and the methods used. The outer box carries a printed RVL code which resolves against production records and returns the item, strength, batch number and dates.

The batch number should read the same on the vial, on the box and on the certificate. Where it does not, treat the material as undocumented until the discrepancy is explained.