Magnesium Blood Test
Synonyms
None
Purpose
Magnesium Blood Test measures the amount of magnesium ions in blood.
Patient Preparation
No special preparations required.
Samples
1ml with a minimum volume of 0.7ml of serum or plasma collected in a Gel-barrier, red-top or green top tube (lithium heparin). Avoid using EDTA, oxalate or citrate plasma. Serum or plasma should be separated within 45 minutes of sample collection. Store sample at room temperature.
Reference Range
0.65-1.05mmol/L
Results Turnaround
Within 24 hours of receipt of samples.
Diseases / Diagnostic indicators
Magnesium deficiency is associated with neuromuscular disorders while increased levels manifest by decreased reflexes, heart block and hypocalcaemia.