|Values are valid only on day of printing.|
Preferred test for analysis of erythrocyte porphyrins
Establishing a biochemical diagnosis of erythropoietic protoporphyria, and X-linked dominant protoporphyria
|Test ID||Reporting Name||Available Separately||Always Performed|
|PPFWE||Protoporphyrins, Fractionation, RBC||Yes, (order PPFWE)||No|
This test is recommended for screening patients for possible erythropoietic protoporphyria and X-linked dominant protoporphyria. In addition, it can be used for evaluation of iron-deficiency anemia and chronic lead intoxication. Testing begins with total erythrocyte porphyrins. If the result is <80 mcg/dL, it is normal and testing is complete.
If the total erythrocyte porphyrin value is > or =80 mcg/dL, the protoporphyrin fractionation (PPFWE) assay will automatically be performed at an additional charge. The PPFWE test results include free protoporphyrin and zinc-complexed protoporphyrin.
The following algorithms are available in Special Instructions:
-Porphyria (Acute) Testing Algorithm
-Porphyria (Cutaneous) Testing Algorithm