Performance of ELCBG – ICST

Performance of ELCBG

ELCBG sampling is a procedure that is historically performed with varying precision and accuracy. The aim of this National Welsh Standard is to reduce the variation in the performance of ELCBG to improve blood gas sampling.

Check out the tutorials on the performance of earlobe capillary blood gases. When you are ready, complete the assessment to achieve the certificate against the National Welsh Standard (NWS).


Maintenance of a blood gas analyser

Guidelines and Protocols of ELCBGs

Three phases of patient sampling

Test preparation

The Analytic Phase

The Post-Analytic Phase

Equipment required to perform an ELCBG

Puncturing the earlobe

Collecting the blood sample

Test sensitivity

Quality Assurance Procedures

Earlobe Capillary Blood Gases (ELCBGs)

Pulse oximetry

Arterial blood gas measurement

Transcutaneous measurements


All Wales Blood Gas Sampling Guideline – Capillary and Arterial


Performance of ELCBG

This NWS is awarded on completion of a 10-question, 20-minute case-based assessment. The purpose of the assessment is to emulate the clinical scenario and to assess practitioners’ decision-making skills against the expectations of the national Respiratory Health Implementation, according to the national standards for Wales.

If this is your first time working through an Assessment in a National Welsh Standard, Welcome! This section includes instructions on complete the Assessment.

The MCQ has 10 questions and you have 20 minutes to complete it.

To achieve a certificate you must answer 8 or more questions correctly (a pass mark of 80%). You can retake the assessment as many times as you need. Your certificate will appear here, in the overview tab.

The education and resources tabs provide relevant learning materials to help you prepare for the assessment.

When you are ready to do the assessment, select the assessment tab and follow the instructions.

Undertake Assessment

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