Preferred Sample Type
Suitable Specimen Types
Li Hep Plasma SerumBicarbonate
Specimen Volume
0.2 mL bloodSpecimen Transport
Not applicable
Sample Preparation
Centrifuge sample on arrival. Avoid haemolysed samples.
Turnaround Time
24 HoursSample Processing In Laboratory
Usual
Sample Stability
Samples are stable for at 7days at 7°C to 8°C, 40 hours at 15°C to 25°C.
Bicarbonate concentration in uncapped tubes will decrease by approximately 4 mmol/L after 1 hour. Unopened samples are stable for several days if stored refrigerated.
General Information
Serum/Plasma bicarbonate measurements, combined with pH measurement are frequently used to diagnose and treat irregularities in acid-base imbalance. Bicarbonate is a major component of the acid-base buffering system in the circulation. Changes in bicarbonate concentration reflect both acute and chronic disorders in acid-base metabolism.
Patient Preparation
None
Notes
None Given
Reference Range
Adult 22-29 mmol/L
Specifications
-
EQA Status:
NEQAS
- EQAS Scheme: Yes