Skip to Content
UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Methylmalonic Acid / Homocysteine

Test Code(s): MMAHCY / HCMMAHCY

CPT Code(s): 83918, 82136

Testing Site: Testing will be sent to an approved reference laboratory.


Specimen Requirements

Specimen: Blood

Collection Container: Preferred: Red top
Also Acceptable: Green top (with sodium heparin anticoagulant)

Collection Volume: Preferred: 4 mL
Pediatrics: 2 mL

Sample Analyzed: Serum or plasma

Volume Required: Preferred: 1 mL
Pediatrics: 0.2 mL

Outreach Specimen Transport: Transport frozen aliquot to UWHC Core Laboratory (B4/220) on dry ice.

Stability: Ambient: Not acceptable
Refrigerated: Not acceptable
Frozen: Acceptable


Interpretation

Vitamin B12 Deficiency Panel

Back to Lab Test Directory Index