Magnesium CPT: 83735
Expected Turnaround Time
Within 1 day
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Serum (preferred) or plasma.
Red-top tube, gel-barrier tube, or green-top (lithium heparin) tube.
Separate serum or plasma from cells within 45 minutes of collection.
Maintain specimen at room temperature.
To evaluate the level of magnesium in your blood and to help determine the cause of abnormal levels of magnesium, calcium and/or potassium.
When you have symptoms such as weakness, irritability, cardiac arrhythmia, nausea, and/or diarrhea that may be due to too much or too little magnesium; when you have abnormal calcium or potassium levels; when magnesium is given for medical treatment.
A blood sample drawn from a vein in your arm; sometimes a timed urine collection that most often requires a 24-hour sample collection.
For a blood sample, overnight fasting may be required; follow any instructions that you are given.