What does “receptor grade” mean for proteins like IGF-1 LR3?

Receptor grade indicates a preparation intended for receptor-binding and signaling research where structure, purity, and consistency are especially important. It does not imply clinical/GMP status. All items remain Research Use Only (RUO).

What receptor grade typically includes

• High purity: Each lot meets a minimum ≥95% purity (HPLC area %) with MS identity on the COA.
• Integrity & consistency: Formulated and processed to help maintain proper folding and low aggregation suitable for receptor assays.
• Stabilizers/buffer components (if used): Any excipients are disclosed on the COA/label (e.g., salts or carriers used to protect structure/adsorption).
• QC: You’ll receive specific COA data (HPLC/MS, and any other tests performed).

What receptor grade is not

• Not a potency claim for clinical dosing.
• Not for in vivo administration (human or veterinary).

Practical tips for receptor assays

• Check the COA for purity, identity, salt form, and any excipients.
• Reconstitute gently.
• Aliquot & freeze promptly to avoid repeat freeze–thaw; protect from light.

RUO disclaimer: For laboratory research use only. Not for human or veterinary consumption, diagnosis, or therapy.