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Laboratory Test Reference Guide

Laboratory Information

Test Name

Base excess

Specimen Collection

Specimen Collection and Transport Protocols

Remove 6 times the volume of the catheter as waste prior to collecting the blood sample from an arterial line.

Adult Specimen

Whole blood (arterial or venous). 1.5 mL collected into a 3 mL heparinsed blood gas syringe, capped with a filter cap. Remove air immediately after collection by expelling through the filter cap. Mix for 20 seconds. Must be analysed within 30 minutes.

Paediatric Specimen

0.5 mL blood collected into a 1 mL heparinsed blood gas syringe, capped with a filter cap. Remove air immediately after collection by expelling through the filter cap. Mix for 20 seconds. Must be analysed within 30 minutes.

Sample Delivery to Lab

Ambient

Test Information

Department

Biochemistry and POCT

Test Availability

Mon - Sun, 24hrs

Laboratory Turnaround Time

30 minutes

Method

Blood gas analyser

Unit Of Measurement

mmol/L

Reference Interval

-2 to +2 mmol/L

Cord Blood (arterial & venous)  -12 - +2  mmol/L

Minimum Volume

0.3 mL blood collected in to a 1 mL syringe.

Electronic Information

Registration Code

BE

HL7Mapping Code

$BE

LOINC Code

11555-0