Formulation: Each 4 ml column contains 0.5 ml of sorbent
Shelf life (days): 730
Notes: Traditional purification of urine and plasma samples prior to measurement by EIA has required the use of reverse phase C-18 columns and various organic solvents. As this method relies upon polarity for separation, the final purified product is a non-specific mixture of many compounds. Further purification by TLC or HPLC is then required to isolate a single product. As an alternative, affinity chromatography provides a specific, reliable, and convenient means of purification for a variety of sample types. Cayman Chemical has developed an affinity column for the purification of cysteinyl leukotriene (cysLT) from urine and plasma samples.