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Test Code PO4 Phosphate, serum

Laboratory Code

LAB113

Specimen Requirements

Submit only one of the following:

 

Preferred

Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0 mL
Minimum Volume: 0.5 mL serum
Collection Instructions:  Allow specimen to clot for 30 mins and centrifuge within 2 hrs.


Acceptable
Specimen Type: Plasma
Container/Tube: Green Top (Li Heparin/PST)
Volume: 4.5 mL
Minimum Volume: 0.5 mL plasma
Collection Instructions: Centrifuge within 2 hrs.

Specimen Stability

Specimen Type Serum/Plasma
Ambient 1 day
Refrigerate 3 days
Frozen 30 days

Methodology

Colorimetry

Days and Times Performed

24 hrs, TAT 1 day

Specimen Condition

Haemolysis Alert/Reject
Icterus OK
Gross Lipaemia Alert/Reject
Others Not applicable

Reference Interval

Age  
0 – < 1 wk 1.25 – 2.85 mmol/L
1 wk – < 1 mth 1.50 – 2.75 mmol/L
1 – 5 mths 1.45 – 2.50 mmol/L
6 mths – < 1 yr 1.30 – 2.30 mmol/L
1 – 3 yrs 1.10 – 2.20 mmol/L
4 – 14 yrs 0.90 – 2.00 mmol/L
15 – 17 yrs 0.80 – 1.85 mmol/L
18 – 19 yrs 0.75 – 1.65 mmol/L
≥ 20 yrs 0.75 – 1.50 mmol/L

Testing Laboratory

National University Hospital

Clinical Chemistry, 67724346

Useful For

Assessment of calcium and phosphate disorders.

Service Code

31023

LOINC Code Information

14879-1

Update

Last updated 26/03/2025