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Test ID: ALADW    
Aminolevulinic Acid Dehydratase, Washed Erythrocytes

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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 genetic test or proper submission of the test request

Aminolevulinic acid dehydratase (ALAD) activity is 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 ALAD deficiency porphyria (ADP). This method will not exhibit a decreased ALAD enzyme activity due to lead intoxication. This test should only be ordered when the specimen will be received at Mayo Clinic Laboratories within 24 hours of collection.

 

The preferred test for analysis of ALAD is ALAD / Aminolevulinic Acid Dehydratase (ALAD), Whole Blood.

 

This test will not detect lead intoxication.

Testing Algorithm Delineates situations 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 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

Enzymatic End point/Spectrofluorometric

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

ALA Dehydratase, RBC

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

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