Phosphorus, Inorganic, Plasma or Serum
Also known as: PHOS
Use
The Phosphorus, Inorganic, Plasma or Serum test is used to measure the level of inorganic phosphate in the plasma or serum. Phosphate levels are essential for various bodily functions, including bone formation, energy storage, and the regulation of biochemical pathways. Abnormal phosphate levels can be indicative of disorders such as kidney disease, parathyroid gland dysfunction, or Vitamin D imbalance. This test aids in diagnosing and managing conditions like nephrolithiasis (kidney stones), hypocalcemia, and hypercalcemia.
Special Instructions
Collect plasma separator tube or serum separator tube. Additional acceptable tubes include Green (lithium heparin), Lavender (K2 EDTA), or Pink (K2 EDTA). Allow serum tube to clot completely at room temperature. Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. Minimum volume is 0.2 mL.
Limitations
The test may be affected by hemolysis and certain anticoagulants. Hemolyzed specimens and those collected in sodium fluoride/potassium oxalate or citrate tubes are unacceptable. The test does not measure organic phosphate levels and may not fully reflect the phosphate state in certain pathological conditions. Stability concerns may arise if samples are not stored or transported under recommended conditions.
FDA ApprovedNew York Approved
Methodology
Other
Biomarkers
LOINC Codes
- 2777-1
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
1 mL
Minimum Volume
0.2 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Separate serum or plasma from cells within 2 hours of collection.
Storage Instructions
Refrigerated
Causes for Rejection
Hemolyzed specimens. Specimens collected in sodium fluoride/potassium oxalate, citrate.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 hours |
| Refrigerated | 4 days |
| Frozen | 1 year |