Accu Chek Inform II Blood Glucose Meter Standard Operating
Procedure.
Authorised by: K. Ashton
Signature : ………….
Do not photocopy this document
Page 8 of 14
Last printed: 13 May 2015 ( ward-jones julie (rq6) rlbuht )
Interferences & Potential sources of variation
Lipaemia: Triglycerides > 20.3 mmol/L may produce elevated results.
Galactose: > 0.83 mmol/L will cause over estimation of blood glucose.
Ascorbic Acid: > 17mmol/L will cause over estimation of blood glucose. DO NOT perform testing
on patients receiving high dose ascorbic acid (Pabrinex)
Haematocrit should be between 10 % and 65 %. Low haematocrit may cause higher results.
High haematocrit may cause lower results
Blood glucose meters should not be used for patients who have peripheral circulatory failure, because
the results might not be a true reflection of the physiological blood glucose level. For example: in severe
dehydration as a result of DKA or due to hyperglycaemia, hyperosmolar non-ketotic coma, hypotension,
shock, peripheral vascular disease, severe vomiting and diarrhoea.
Glucose meters are also contra-indicated for patients who cannot recognize or respond to thirst sensations
and in patients who have sustained uncontrolled diabetes.
DO NOT perform testing on patients <30 minutes post dialysis, as this will not give an accurate reflection of
the patients glycaemic status.
Principle of procedure for calculating results including, where relevant, the measurement uncertainty
of measured quantity values
Results are calculated automatically by the meter and displayed in mmol/L.
The test strips are plasma-referenced in line with the recommendations of the International Federation of
Clinical Chemistry and Laboratory Medicine (IFCC), i.e. although whole blood is applied to the test strip;
the meter shows results that are equivalent to the glucose concentrations in plasma.
Measurement of uncertainty
2.5 0.10 mmol/L (95% confidence, N=60)
17.0 0.5 mmol/L (95% confidence, N=60)
Responsibilities of personnel in authorizing, reporting and monitoring reports
(i) Users are responsible for ensuring results outside the expected range are communicated
immediately to the relevant member of staff (Doctor or Senior nurse), as highlighted in training and
in accordance with the Trust POCT Policy.
(ii) Users are also responsible for ensuring results are recorded in the patient notes, in accordance with
the Trust POCT Policy.
(iii) Any therapeutic decision based on the POCT result is the responsibility of the Clinical Director,
as highlighted in the Trust POCT Policy.
(iv) POCT laboratory staff periodically check the Roche Cobas IT system to ensure wireless I.T
communications between all the meters and the Cobas IT system are working. All results are stored
on the Cobas IT system.
(19 Seiten)
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