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Updated: Aug 19, 2026

Measuring Plasma Membrane Protein Endocytic Rates by Reversible Biotinylation
Published on: December 23, 2009
Rapid protein determinations on ultrafiltrates prepared for free phenytoin quantification
Abstract:
Ultrafiltration techniques for the separation of bound and free ligand are dependent on minimal amounts of protein-bound drug leakage through the membrane devices. A dye-impregnated test strip protein assay (Chemstrip-9) provides a rapid, visual assessment of membrane protein leakage. The test strips are sensitive to 200 mg/L of albumin in ultrafiltrates and do not react with as much as 4 mg/L of phenytoin.
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