Test Overview

Test Methodology

Enzymatic End point/Spectrofluorometric

Test Usage

Confirmation of a diagnosis of aminolevulinic acid dehydratase deficiency porphyria (ADP).

Reference Range*

> or = to 4.0 nmol/L/sec (normal), 3.5 - 3.9 nmol/L/sec (indeterminate), <3.5 nmol/L/sec (diminished). Reference ranges have not been established for patients who are <16 years of age.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details

Days Test Performed

Tuesday, Thursday

Analytic Time

2 - 4 days

Soft Order Code

ALADR

MiChart Code

ALA Dehydratase, RBC

Synonyms

Synonyms

Aminolevulinic Acid Dehydratase (ALA-D), Washed Erythrocytes

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Laboratory

Sendout

Laboratory Reference

Mayo ALADW

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Specimen Requirements

Special Handing

Place on ice immediately following collection. See below for processing instuctions.

Normal Volume

3 mL washed erythrocyte suspension

Minimum Volume

1 mL washed erythrocyte suspension

Additional Information

Test sent to Mayo Medical Laboratories.

Billing Information

Fee Codes


CPT Code

82657

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