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HelpTest Code PO4 Phosphate, serum
Additional Codes
| Epic Ordering Code | LAB113 |
| NBS code | LBC00783 |
| Service code | 31023 |
Specimen Requirements
Submit only one of the following:
| Preferred: | Acceptable: |
| Yellow Top | Light Green Top |
Processing Requirements
Allow specimen to clot for 30 mins (Yellow Top) and centrifuge within 2 hours
Specimen type: Serum
Volume: 0.5mL
Specimen Stability
| Specimen Type | Serum/Plasma |
|---|---|
| Ambient | 1 day |
| Refrigerate | 3 days |
| Frozen | 30 days |
Specimen Condition
| Haemolysis | Alert/Reject |
|---|---|
| Icterus | OK |
| Gross Lipaemia | Alert/Reject |
| Others | Not applicable |
Methodology
Colorimetry
Days and Times Performed
24 hrs, TAT 1 day
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.
Update
Last updated 27/07/2026
LOINC Code Information
14879-1