Why to get tested?
To evaluate the level of phosphorus in your blood and to aid in the diagnosis of conditions known to cause abnormally high or low levels of phosphorus
When to get tested?
In follow up to an abnormal calcium level; when you have a kidney disorder or uncontrolled diabetes; when you are taking calcium or phosphate supplements
What sample needed?
A blood sample drawn from a vein in your arm or sometimes a timed urine collection (usually a 24-hour sample)
What preparation I need before test?
Overnight fasting may be required for a blood sample; follow any instructions that you are given.