Phosphorus

CPT Code

84100

Specimen Type

Blood

Container Type

Serum Separator Tube (SST)/Yellow

Stability

Room Temperature, 1 day; 2-8°C, 4 days; -20°C, 1 year

Handling Instructions

Allow to clot for 30 mins, centrifuge within 2 hours

Clinical Notes

Phosphorus is a mineral that combines with other substances to form organic and inorganic phosphate compounds. The terms phosphorus and phosphate are often used interchangeably when talking about testing, but it is the amount of inorganic phosphate in the blood that is measured with a serum phosphorus/phosphate test.