The preferred collection of Pleural Fluid pH should be anaerobically into a 3 mL heparin syringe.
Absolute minimum volume is 1 mL- expel all air.The syringe should be capped to avoid exposure to air.
An alternate container type is a sterile CSF tube filled to the top to minimise gas exchange.
Sample stability (samples must be anaylsed within this time)
1 hour stored at room temperature
NOTE: Pleural pH can NOT be requested on a shared container such as a Microbiology test.