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Aminolevulinic acid dehydratase, RBC

Item Value
Clinical Questions Does my patient have acute porphyria?
Approval req'd? No
Available Stat? No
Test code ALAD
Performed by Mayo
Sendout? Yes
Method Enzymatic endpoint/Spectroflurometric
Patient Preparation Have patient fast for 12-14 hours. Water may be taken as needed. No other liquids are allowed. Patient should abstain from alcohol for 24 hours prior to collection.

Note: The patient should be off medications for 1 week. If clinically inappropriate to discontinue medications, forward a list of medications with the specimen.
Collection Instructions Draw a full, Dark green-top (Sodium Heparin) tube, and send specimen on wet ice to lab immediately.

Draw specimen Monday-Thursday by noon only.
Container type Dark Green top on ice
Amount to Collect 5 mL blood
Sample type Heparinized whole blood
Preferred volume 5 mL blood
Min. Volume 5 mL blood
Processing notes Whole Blood to be washed at Mayo Medical Laboratories. Specimen must arrive within 48 hours of draw.

Place green top on wet ice and forward whole blood to China Basin for MCI courier pickup at 1600 hours. DO NOT freeze sample.

Notify sendout at 3-1349 that specimen is en-route. Mark sample REFRIGERATED to Mayo Labs.

Order Mayo test #88924.
Ref Lab Rejection Criteria Sample not received by Mayo within 48 hours of collection. Frozen sample.
Units nmol/L/sec
Normal range
Normal >3.9 nmol/L/sec
Indeterminate 3.5-3.9 nmol/L/sec
Decreased <3.5 nmol/L/sec
Synonyms ALA dehydrase; ALA-D
Stability Refrigerated whole blood 2 days.
Turn around times 5-7 days
CPT coding 82657-90
Last Updated 3/24/2013 7:22:36 PM
Entry Number 1202
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