Ordering Recommendation

Carrier screening or diagnostic testing for maple syrup urine disease type 1B for individuals of Ashkenazi Jewish descent.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

Lavender (EDTA), pink (K2EDTA), or yellow (ACD Solution A or B).

Specimen Preparation

Transport 3 mL whole blood. (Min: 1 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Plasma or serum. Specimens collected in sodium heparin or lithium heparin tubes. Frozen specimens in glass collection tubes.

Remarks
Stability

Ambient: 72 hours; Refrigerated: 1 week; Frozen: 1 month

Methodology

Polymerase Chain Reaction (PCR), Fluorescence Monitoring

Performed

Varies

Reported

5-10 days

Reference Interval

By report

Interpretive Data

Refer to report

Counseling and informed consent are recommended for genetic testing. Consent forms are available online.

Compliance Category

Laboratory Developed Test (LDT)

Note

Hotline History

N/A

CPT Codes

81205

Components

Component Test Code* Component Chart Name LOINC
2013731 Maple Syrup Urine Disease, Specimen
2013732 Maple Syrup Urine Disease, Allele 1
2013733 Maple Syrup Urine Disease, Allele 2
2013734 Maple Syrup Urine Disease, Interp
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • MSUD
Maple Syrup Urine Disease, Type 1B (BCKDHB), 3 Variants