Test Name: Phosphate
Health Link Test Code: PHOS
LIS Test Code: PO4
CPT Code(s): 84100
Methodology: Phosphomolybdate, UV
Days Performed: Daily, 24 hours.
In-Lab Turnaround Time: 4 hours.
Stat In-Lab Turnaround Time: 1 hour.
Collection Container: Green cap with yellow ring (PST)
Also Acceptable: Green top, Red cap with yellow ring (SST), Red top
Collection Volume: 1 mL
Pediatric Collection Volume: 0.4 mL
Sample Analyzed: Plasma or serum
Testing Volume: 0.5 mL
Pediatric Testing Volume: 0.2 mL
Centrifuge. Redraw specimen if hemolysis is present. If a complete barrier has not formed, transfer cell-free plasma/serum to plastic vial. Refrigerate.
Transport specimen to UWHC Hospital Laboratory. Transport with coolant pack if coming from clinic location.
Whole blood specimens greater than 2 hours old when received by the laboratory are not acceptable.
|15 days-11 months||4.6-8.4|
|19 years and up||2.3-4.7|
Interpretation Type: Reference Interval
Critical Calls: yes
Patients on mannitol may have falsely decreased phosphate levels.