Methodology
Mass Spectrometry (MS); Enzymatic
Synonyms
MMA
Specimen Type
Serum or Plasma
Performing Lab
Quest Diagnostics San Juan Capistrano
Epic ID
Other Reference Test
Collection Information
Specimen Required
2.5-5.5 mL Blood
Container Type
Red Top (No Additive)
Collection Instructions
Plasma collected in an EDTA (lavender-top) or sodium heparin (green-top) tube is also acceptable. Red top tubes: Place the specimen in a refrigerator or ice bath for 30 minutes after collection. Barrier gel separator tubes: Place the specimen in a refrigerator for 30 minutes after collection. Do not place barrier tubes in an ice bath as freezing may prevent the barrier gel from adequately separating serum from cells. EDTA or heparin tubes: Place the specimen in a refrigerator or ice bath until the specimen can be centrifuged.
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-OK/Frozen-OK
Specimen Stability
Room Temp=4 Days; Refrigerated=7 Days; Frozen=6 Months
Rejection Criteria
Gross hemolysis; Gross lipemia; Whole blood
Test Volume Required
2.7 mL Serum or Plasma
Minimum Test Volume
1.1 mL Serum or Plasma
CPT Codes
83090