Laboratory Management, Quality and Accreditation

Question 1

What does the ‘Code of Practice for Providers of Forensic Science Services’ cover

Answer 1

*Initial forensic activity at a scene
*Scene examination strategy
*Recovery, preservation, transport and storage of exhibits
*Screening tests for use in the field
*Assessment, selection , examination, sampling. Testing and / or analysis of
exhibits
*Testing activities using laboratory based methods
*Recording of actions taken
*Assessment / review of examination and test results
*Reporting and presentation of results
*Interpretation and opinions

Question 2

Accuracy

Answer 2

how close results are to true value

Question 3

Precision

Answer 3

how close the experimental results to each other – the degree of repeatability of the technique under the same conditions

Question 4

Limit of detection

Answer 4

the smallest amount of a substance that can
be detected, but nor necessarily quantified

Question 5

Limit of quantification / Sensitivity

Answer 5

smallest amount of substance in a sample that can be accurately measured by the
technique

Question 6

Specificity

Answer 6

ability of the technique to measure or detect only what it is intended to measure or detect

Question 7

Range

Answer 7

interval between the lower and upper levels of detection which the technique has been demonstrated to produce accurate and precise results

Question 8

Reproducibility

Answer 8

ability of the technique to produce results that can be replicated by another qualified analyst

Question 9

Robustness

Answer 9

capacity of the technique to remain unaffected by variations in the techniques parameters