Protoporphyrins, Fractionation, Washed Erythrocytes
Method Description Describes how the test is performed and provides a method-specific reference
Extraction followed by fractionation by high-performance liquid chromatography (HPLC). Zinc protoporphyrins and free protoporphyrins are separately quantitated.(Ford RE, Ellefson RD: Quantitation of erythrocyte protoporphyrins and zinc protoporphyrin by high-pressure liquid chromatography. Clin Chem 1984;30:972)
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Monday through Friday, 8 a.m.