Obstetric Magnesium

Message
Chemistry


Test Code
LAB1237009


Alias/See Also
OB Mg


CPT Codes
83735

Physician Attestation of Informed Consent
No


Includes
Obstetric Magnesium only


Preferred Specimen
Light green top tube (lithium heparin plasma)


Minimum Volume
Whole blood: 600 uL (two full light-green-top microtainers or two full red-top microtainers).
Serum/plasma: 300 uL.


Other Acceptable Specimens
Gold top (serum separator tube) or Red Top


Instructions
LAB: Serum acceptable. No hemolysis. Hemolyzed specimens can cause falsely elevated results. Separate specimen within 2 hours of collection.


Specimen Stability
Ambient: 1 week
Refrigerated: 1 week
Frozen: 1 month


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Grossly hemolyzed specimens


Methodology
Vitros

Setup Schedule
Everyday


Report Available
Same Day


Reference Range
4.8-8.4 mg/dL


Performing Laboratory
Hoag Newport / Hoag Irvine



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.