Posted: November 25th, 2015
A sample was analysed for electrolytes and found to have a sodium of 200 mmol/l (reference range 135 – 145 mmol/l) and a potassium of greater than 10 mmol/l (reference range 3.5 – 5.0 mmol/l). Such results would be incompatible with life. a) Discuss all the possible pre analytical factors that could cause errors in a laboratory result. (55 marks) b) What do you think might be the error in this particular case? (5 marks) c) Discuss the quality control procedures that laboratories use to monitor analytical performance
A sample was analysed for electrolytes and found to have a sodium of 200 mmol/l (reference range 135 – 145 mmol/l) and a potassium of greater than 10 mmol/l (reference range 3.5 – 5.0 mmol/l). Such results would be incompatible with life.
- a) Discuss all the possible pre analytical factors that could cause errors in a laboratory result. (55 marks)
- b) What do you think might be the error in this particular case? (5 marks)
c) Discuss the quality control procedures that laboratories use to monitor analytical performance