Test Details
Mnemonic
MTHFA
Ordering Code
3400501
CPT-4 Code(s)
81291
Specimen Information
The following germline genetic tests from Quest require physician attestation that patient consent has been received if ordering medical facility is located in AK, DE, FL, GA, IA, MA, MN, NV, NJ, OR, SD or VT or test is performed in MA.
Collect
Lavender EDTA
Specimen Preparation
Send 5.0 mL whole blood.
Alternate Specimen
Whole blood: Dark blue EDTA, sodium or lithium heparin, ACD A
Minimum Volume
3.0 mL
Transport Temperature
Room temperature
Rejection Criteria
Serum, plasma, tissue specimens
Stability
Room temperature: 8 days
Refrigerated: 8 days
Frozen: 30 days
Refrigerated: 8 days
Frozen: 30 days
Methodology
Polymerase Chain Reaction and Detection
Reference Range
See report
Performing Laboratory
Quest SJC
New York DOH Approval Status
Yes