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HelpTest Code pH, Pleural Fluid pH, Pleural Fluid
Laboratory Code
LAB3040294
Specimen Requirements
Specimen Type: Body Fluid
Container/Tube: Syringe
Volume: 3.0 mL
Minimum Volume: 2.0 mL
Collection Instructions: Send sample to laboratory immediately.
Specimen Stability
| Specimen Type | Body Fluid |
|---|---|
| Ambient | Reject |
| Refrigerate | 2 hours (ice slurry) |
| Frozen | Reject |
Methodology
Potentiometry
Days and Times Performed
24 hrs, TAT 1 day
Specimen Condition
| Haemolysis | Not applicable |
|---|---|
| Icterus | Not applicable |
| Lipaemia | Not applicable |
| Others: Highly viscous specimen | Reject |
Reference Interval
A pH <7.3 is indicative of pleural acidosis. Where clinically indicated, consider tube drainage of parapneumonic effusion with pH <7.2 .
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Service Code
31007
LOINC Code Information
2750-8
Update
Last updated 11/03/2025