Is the $250 test the same as USP monograph testing?
No. Colestipol hydrochloride does not fit the standard $250 identity, purity and quantity test, so it is tested to the USP Colestipol Hydrochloride monograph. Pricing is quoted.
Can colestipol be tested by HPLC like a small molecule?
Colestipol is an insoluble cross-linked polymer with no single molecular formula, so it cannot be dissolved and run like a small molecule. Testing is scoped case by case, with identity by infrared spectroscopy as in the monograph.
What form does colestipol arrive in?
Usually as granules or tablets. Tell us the form and what you need measured, since the approach differs from soluble compounds.