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HelpTest Code pH, Pleural Fluid pH, Pleural Fluid
Additional Codes
| Epic Ordering Code | LAB3040294 |
| NBS code | LBC04780 |
| Service code | 31007 |
Specimen Requirements
Submit the following:
| Container: |
| Heparinized Syringe |
Processing Requirements
Specimen type: Fluid
Volume: 1mL
Specimen Stability
| Specimen Type | Body Fluid |
|---|---|
| Ambient | Not available |
| Refrigerate | Storage of fluid is not recommended. |
| Frozen | Storage of fluid is not recommended. |
Specimen Condition
| Haemolysis | Not applicable |
|---|---|
| Icterus | Not applicable |
| Lipaemia | Not applicable |
| Others: Highly viscous specimen | Reject |
Methodology
Potentiometry
Days and Times Performed
24 hrs, TAT 1 day
Reference Interval
A pH < 7.3 is indicative of pleural acidosis. Where clinically indicated, consider tube drainage of parapneumonic effusion with pH < 7.2 .
Reference: British Thoracic Society Pleural Guidlines (2010)
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Update
Last updated 26/07/2026
LOINC Code Information
2750-8