Result Test Name
METHYLMALONIC ACID
Laboratory
QUEST LAB
Result Test Code
123011408
Laboratory Test Name
QUEST METHYLMALONIC ACID AND HOMOCYSTEINE
Reportable Test Name
-
Result LOINC
13964-2
Collection Container
Red Top - Plain
Units
-
Collection Requirements
Preferred Specimen(s) 2.7 mL serum Alternative Specimen(s) Plasma collected in: Sodium heparin (green-top) Minimum Volume 1.1 mL Collection Instructions Red-top tubes (preferred): Place the specimen in a refrigerator or ice bath for 30 minutes after collection. Centrifuge the specimen as soon as possible after complete clot formation has taken place. Transfer the serum to a transport tube. Barrier gel separator tubes (acceptable): Place the specimen in a refrigerator for 30 minutes after collection. Centrifuge the specimen as soon as possible after complete clot formation has taken place. Do not place barrier tubes in an ice bath as freezing may prevent the barrier gel from adequately separating serum from cells. Heparin tubes (acceptable): Place the specimen in a refrigerator or ice bath until the specimen can be centrifuged. Centrifuge the specimen as soon as possible and transfer the plasma to a transport tube.
Container Temp
Refrigerated (3)
Container Volume
1.100
Test Info
Methylmalonic Acid and Homocysteine - To diagnose and monitor vitamin B12 (cobalamin) deficiency.
Shipping Instructions
Transport Container Transport tube Specimen Stability Room temperature: 4 days Refrigerated: 7 days Frozen: 6 months