| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Methylmalonic Acid, Urine with Creatinine
Test Code91032
Alias/See Also
LAB00350
MMA UR
MMA UR
CPT Codes
82570, 83921
Preferred Specimen
1.7 mL urine
Minimum Volume
0.6 mL
Other Acceptable Specimens
24-hour urine • Random clean-catch urine • Catheterized urine • First void clean-catch
Instructions
Do not use preservatives
Transport Container
Plastic urine container
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 4 days
Refrigerated: 12 days
Frozen: 30 days
Refrigerated: 12 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature • Acidified urine
Methodology
Chromatography/Mass Spectrometry
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Tues, fri
Report Available
4-8 days
Reference Range
| Methylmalonic Acid, Urine | 0.3-2.2 mmol/mol creat |
Creatinine, Random Urine
| 0-6 Months | 0.18-2.48 mmol/L |
| 7-11 Months | 0.18-2.74 mmol/L |
| 1-2 Years | 0.18-9.72 mmol/L |
| 3-8 Years | 0.18-11.49 mmol/L |
| 9-12 Years | 0.18-14.14 mmol/L |
| >12 Years | 1.77-23.31 mmol/L |
Clinical Significance
Methylmalonic Acid (MMA) is useful to diagnose and monitor Vitamin B12 (cobalamin) deficiency, and to diagnose and monitor patients with methylmalonic acidemia.
Performing Laboratory
| Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
| 33608 Ortega Highway |
| San Juan Capistrano, CA 92675-2042 |