| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Magnesium OB
Test CodeMGOB - NOCO
CPT Codes
83735
Preferred Specimen
In-patient: 1 mL plasma from Green top (Lithium Heparin)
Out-patient: 1 mL serum from SST
Out-patient: 1 mL serum from SST
Minimum Volume
0.5 mL
Other Acceptable Specimens
1 mL serum from Serum Gel or Red Top
Specimen Stability
| Plasma Li Hep | Refrigerated | 7 days |
| Serum SST | Refrigerated | 7 days |
| Red Top – Separated* | Refrigerated | 7 days |
*Centrifuge and aliquot into a plastic vial.
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Mild hemolysis
Methodology
Spectrophotometric Bichromatic Endpoint
Setup Schedule
Monday through Sunday; Continuously
Reference Range
1.5 - 2.5 mg/dL
Critical value (automatic call-back):<1.0 mg/dL or >9.5 mg/dL
Critical value (automatic call-back):<1.0 mg/dL or >9.5 mg/dL
Clinical Significance
Preterm labor is defined as labor that starts before 37 weeks of pregnancy. Some women in preterm labor give birth within the next seven days. Magnesium Sulfate is commonly used for treating preterm labor.
Performing Laboratory
North Colorado Medical Center
McKee Medical Center
Banner Fort Collins Medical Center
