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HelpTest Code PHOS Phosphorus
Additional Codes
| EPIC | LAB4162 |
Clinical Significance
Measurements of phosphorus (inorganic) are used in the diagnosis and treatment of various disorders, including parathyroid gland and kidney diseases, and vitamin D imbalance.
Source: Beckman Coulter Unicel, PHS IFU. REF #A09426 12/22/15
Methodology
Timed endpoint method (Beckman Coulter UniCel DxC 660i)
Sample Type
| Preferred Sample Type | |
|---|---|
| Light green top - Plasma | |
| Acceptable Sample Type(s) | |
|---|---|
| Dark green top - Plasma | |
| Yellow top - Serum | |
| Red top - Serum | |
Centrifuge: Yes
Specimen Minimum Volume
0.5 mL
Specimen Stability
| Temperature | Time |
|---|---|
| Ambient (18-25°C) | 8 hours |
| Refrigerated (2-8°C) (store) | 48 hours |
| Frozen (-15 to -20°C) | 1 month |
Separate plasma or serum from cells within 2 hours.
Reference Ranges
| Normal Range | |
|---|---|
| <1 month | 4.2 - 10.5 mg/dL |
| >1 month | 2.3 - 4.8 mg/dL |
| Critical Values |
|---|
| ≤1.0 mg/dL |
| Technical Range |
|---|
| 1.0 - 12.0 mg/dL |
Rejection Criteria
| Hemolysis | 1+ or greater, reject |
|---|---|
| Icterus | See below* |
| Lipemia | N/A |
*>7.5 mg/dL of bilirubin will cause falsely decreased values
Availability
| Performed | STAT |
|---|---|
| 24/7 | Yes |
Performing Laboratory
MultiCare Yakima Memorial Hospital Laboratory
Lab Department
Chemistry
CPT Code
84100
LOINC
2777-1 Phosphate [Mass/Vol]