TEST CATALOG ORDERING & RESULTS SPECIMEN HANDLING CUSTOMER SERVICE EDUCATION & INSIGHTS
Test Catalog

Test ID: PEWE    
Porphyrins Evaluation, Washed Erythrocytes

Useful For Suggests clinical disorders or settings where the test may be helpful

Preferred test for analysis of erythrocyte porphyrins

 

Establishing a biochemical diagnosis of erythropoietic protoporphyria, and X-linked dominant protoporphyria

Reflex Tests Lists tests that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial tests.

Test IDReporting NameAvailable SeparatelyAlways Performed
PPFWEProtoporphyrins, Fractionation, RBCYes, (order PPFWE)No

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

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 below 80 mcg/dL, it is normal and testing is complete.

 

If the total erythrocyte porphyrin value is 80 mcg/dL or above, the protoporphyrin fractionation  assay will automatically be performed at an additional charge. The fractionation test results include noncomplexed (free) protoporphyrin and zinc-complexed protoporphyrin.

 

The following algorithms are available in Special Instructions:

-Porphyria (Acute) Testing Algorithm

-Porphyria (Cutaneous) Testing Algorithm

Special Instructions Library of PDFs including pertinent information and forms related to the test

Method Name A short description of the method used to perform the test

NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.

Yes

Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

Porphyrin Evaluation, RBC

Aliases Lists additional common names for a test, as an aid in searching

Erythrocyte Porphyrin
Erythropoietic Protoporphyria (EPP)
Free Erythrocyte Porphyrin (FEP)
Protoporphyrin
Protoporphyrins, Total, Erythrocytes
Red Blood Cell (RBC) Porphyrins
X-linked Dominant Protoporphyria (XLDPP or XDP)