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Laboratory Medicine

Laboratory Test Catalogue

Phosphorous (PO4)

Test Name

Phosphorous (PO4)

Gold Tube Specimen Type / Requirements

Container Type = Gold (SST)

Minimum Volume = 1mL Serum

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Collect sample in gold top. Heparinized plasma (lithium or ammonium heparin) is also acceptable. Write your initials, date and time of collection on the collection label.

Laboratory Staff Instructions: Separate serum or plasma from cells within 2 hours of collection.

Stability: Stable at room temperature for 24 h, refrigerated for 1 week and frozen at -15 to -20°C for 6 months.

Transportation: Transport at room temperature ASAP.

Sample Rejection Criteria: Gross hemolysis or samples of non sufficient quantity.

Required Documentation

Turnaround Time (TAT)

45 minutes Trauma/Stat,
2 hour routine

Test Utilization

Reference Value

Adult: 0.80 – 1.35 mmol/L

0 – W1 1.70 – 2.30 mmol/L

Test Code



Potentiometry (Ion Selective Electrode)

Testing Location


Other Information

Last Updated: February 07, 2020