Phosphorus
Also known as: Inorganic Phosphate, Blood
Use
Causes of high phosphorus: Youth; exercise; dehydration and hypovolemia; high phosphorus content enema; acromegaly; hypoparathyroidism; pseudohypoparathyroidism; bone metastases; hypervitaminosis D; sarcoidosis; milk-alkali syndrome; liver disease, such as portal cirrhosis; catastrophic events such as cardiac resuscitation, pulmonary embolism, renal failure; diabetes mellitus with ketosis; serum artifact−sample not refrigerated; overheated, hemolyzed sample, or serum allowed to remain too long on the clot.
Special Instructions
After specimen collection, it is crucial to separate serum or plasma from cells within 45 minutes to ensure sample integrity.
Limitations
Phosphorus levels can vary significantly during the day and can be influenced by recent carbohydrate ingestion or intravenous glucose administration. Hemolysis, gross lipemia, and improper labeling can lead to sample rejection. Serum sample integrity must be preserved to avoid false readings that can occur with overheated or hemolyzed specimens.
Methodology
Automated Analyzer (Clinical Chemistry)
Biomarkers
LOINC Codes
- 2777-1
- 2777-1
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.7 mL
Container
Red-top tube, gel-barrier tube
Collection Instructions
Separate serum or plasma from cells within 45 minutes of collection.
Storage Instructions
Maintain specimen at room temperature.
Causes for Rejection
Hemolysis; gross lipemia; improper labeling; unspun or improperly spun specimen
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 14 days |
| Frozen | 14 days |