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Test ID: ALAD
Aminolevulinic Acid Dehydratase (ALA-D), Whole Blood

Secondary ID A test code used for billing and in test definitions created prior to November 2011

88924

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

Confirmation of a diagnosis of aminolevulinic acid dehydratase deficiency porphyria

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

Aminolevulinic acid dehydratase (ALA-D) activity can be inhibited in other situations including hereditary tyrosinemia type 1, lead intoxication, and exposure to styrene, trichloroethylene, or bromobenzene. These causes should be ruled out when considering a diagnosis of ALA-D deficiency porphyria (ADP). 

Note: This assay re-activates ALA-D that has been inhibited by lead. Therefore it is not useful in assessment of lead intoxication.

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

Enzymatic End point/Spectrofluorometric

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

ALA Dehydratase, WB

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

ALA (Aminolevulinic Acid) Dehydratase
ALA-D (Aminolevulinic Acid Dehydratase) Deficiency Porphyria (ADP)
Doss Porphyria
PBG (Porphobilinogen) Synthase
Plumboporphyria
Porphobilinogen (PBG) Synthase