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HelpTest Code PO4 Phosphate, serum
Specimen Requirements
Preferred
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0mL
Minimum Volume: 0.5mL serum
Collection Instructions: Allow specimen to clot for 30 minutes and centrifuge within 2 hours
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Acceptable
Specimen Type: Plasma
Container/Tube: Green Top (Li Heparin/PST)
Volume: 4.5mL
Minimum Volume: 0.5mL plasma
Collection Instructions: Centrifuge within 2 hours
Sample Stability
** Preferred temperatures for storage prior to and during shipping to NUH **
| Specimen Type: | Serum/Plasma |
|---|---|
| Ambient: | 1 day |
| Refrigerate: | 4 days |
| Frozen: | 1 year |
Reference Interval
| Age | |
|---|---|
| 0 - < 1 week | 1.25-2.85 mmol/L |
| 1 week - < 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 |
Days and Times Performed
24 hours, TAT 1 day
Methodology
Phosphomolybdate
Service Code
31023
Update
Last updated 26/02/2022
Unacceptable Condition
| Haemolysis | NA |
|---|---|
| Icterus | NA |
| Lipaemic | NA |
| Others | NA |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Assessment of calcium and phosphate disorders