Test Details
Mnemonic
MERWB
Ordering Code
3707110
CPT-4 Code(s)
83825
Specimen Information
Collect
Dark blue EDTA
Specimen Preparation
Send 4.0 mL whole blood in original tube or in a Quest trace element blood transport tube (lavender label).
Alternate Specimen
Whole blood: Dark blue sodium heparin
Minimum Volume
2.0 mL
Transport Temperature
Refrigerated
Rejection Criteria
Clotted specimen
Stability
Room temperature: 5 days
Refrigerated: 7 days
Frozen: Unacceptable
Refrigerated: 7 days
Frozen: Unacceptable
Methodology
Inductively Coupled Plasma/Mass Spectrometry
Reference Range
<10 mcg/L
Performing Laboratory
Quest SJC
New York DOH Approval Status
No