Casandra
Casandra Test Code QD74421Version 1 (DRAFT)
Performing Lab
Methylmalonic Acid and Homocysteine
Also known as: MMA and Homocysteine
Clinical Use
Order TestUse
Not provided.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Mass Spectrometry
Biomarkers
Homocysteine
AnalyteHomocysteine • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Methylmalonic Acid
AnalyteMethylmalonic Acid • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
Not provided.
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Plasma
Volume
2.7 mL
Minimum Volume
1.1 mL
Container
EDTA (lavender-top) tube or sodium heparin (green-top) tube; Red top (no additive) tube
Collection Instructions
Red top tubes: Place in refrigerator or ice bath for 30 minutes after collection; barrier gel separator tubes: refrigerate 30 minutes (no ice bath); EDTA or heparin tubes: refrigerate or ice bath until centrifuged
Causes for Rejection
Gross hemolysis; Gross lipemia; Whole blood
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 4 Days |
| Refrigerated | 7 Days |
| Frozen | 6 Months |
Related Tests
Other tests from different labs that may be relevant