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Test ID: UPGD    
Uroporphyrinogen Decarboxylase (UPG D), Whole Blood

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


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

This test is the preferred test for the confirmation of a diagnosis of porphyria cutanea tarda type II and hepatoerythropoietic porphyria

Genetics Test Information Provides information that may help with selection of the correct test or proper submission of the test request

Uroporphyrinogen decarboxylase (UPGD) is deficient in cases of type II porphyria cutanea tarda (PCT). Enzyme analysis is uninformative in sporadic PCT cases.


Due to longer specimen stability, this test is the preferred test for analysis of UPGD enzyme.

Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.

The following algorithms are available in Special Instructions:

-Porphyria (Acute) Testing Algorithm

-Porphyria (Cutaneous) Testing Algorithm

Special Instructions and Forms Describes specimen collection and preparation information, test algorithms, and other information pertinent to test. Also includes pertinent information and consent forms to be used when requesting a particular test

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

High-Performance Liquid Chromatography (HPLC)/Incubation of Lysed Erythrocytes

Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name

UPG Decarboxylase, WB

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

Erythrohepatic Uroporphyria (EHUP)
Hepatoerythropoietic Porphyria (HEP)
Porphyria Cutanea Tarda (PCT)