Human Growth Hormone Reference Standard USP
Human Growth Hormone Reference Standard USP is a highly purified recombinant somatotropin preparation used exclusively for quality control, assay calibration, and standardization in pharmaceutical manufacturing. It meets United States Pharmacopeia specifications for identity, purity, and potency, and is imported in small quantities for laboratory use. As a chemically defined polypeptide hormone, it falls squarely under tariff item 2937.11.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the reference standard is not specifically somatotropin but another polypeptide hormone
Other polypeptide hormones, their derivatives and structural analogues are classified under this sibling subheading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the product is labeled as a reference standard for laboratory use only, as this may affect classification and regulatory requirements
• Provide a certificate of analysis and pharmacopeial documentation to the CBSA to support the tariff classification
• Verify whether a Controlled Drugs and Substances Act permit is needed, as growth hormone derivatives may be regulated in Canada
Related Products under Tariff item 2937.11.00
Pegylated Somatotropin (PEG-GH)
Pegylated Somatotropin (PEG-GH) is human somatotropin conjugated with polyethylene glycol (PEG) to extend its half-life and reduce injection frequency. This structural modification creates a derivative of somatotropin used primarily for its hormonal effect in growth hormone therapy. The PEGylation does not alter the core hormonal function, making it classifiable under somatotropin derivatives.
Recombinant Human Growth Hormone (Somatropin)
Recombinant Human Growth Hormone (Somatropin) is a recombinant DNA-derived version of human somatotropin, identical in structure to the natural pituitary hormone. It is used primarily to treat growth hormone deficiency in children and adults. As a chemically defined polypeptide hormone, it is directly classifiable under tariff item 2937.11.00.
Somatotropin Lyophilized Powder for Injection
Somatotropin Lyophilized Powder for Injection is a freeze-dried form of recombinant human somatotropin for reconstitution prior to injection. It is used in growth hormone replacement therapy and maintains the structural integrity of the polypeptide hormone. The lyophilized presentation does not change the product's classification under somatotropin.
Somatrem (Methionyl Human Growth Hormone)
Somatrem (Methionyl Human Growth Hormone) is a structurally modified form of human somatotropin with an extra methionine residue at the N-terminus. This modification makes it a derivative of somatotropin used for growth hormone replacement therapy. The analogue maintains the biological activity of the natural hormone and is classifiable under somatotropin derivatives.
Somatrogon (Long-Acting Growth Hormone)
Somatrogon (Long-Acting Growth Hormone) is a structural analogue of somatotropin created by linking human growth hormone to a CTP (C-terminal peptide) sequence from the hCG beta subunit. This modification extends its half-life for weekly dosing. As a structural analogue used primarily for its hormonal effect, it is classifiable under somatotropin derivatives.