Table 5: The reason of pre analytical error by type of requested laboratory service Tikur Anbessa specialized hospital and St. Paul Millennium medical college, Addis Ababa Ethiopia, 2018.

Reason of error

Requested laboratory service

Total

Hematology

Clinical chemistry

CD4 count

Viral load

 

Labeling error

4 (44.4%)

2 (14.3%)

4 (30.8%)

3 (60.0%)

13 (31.7%)

Low quantity

0

3 (21.4%)

2 (15.4%)

0

5 (12.2%)

Sample without request

2 (22.2%)

0

1 (7.7%)

1 (20.0%)

4 (9.8%)

Clotted

2 (22.2%)

3 (21.4%)

2 (15.4%)

1 (20.0%)

8 (19.5%)

Hemolyzed

1 (11.1)

6 (42.9%)

2 (15.4%)

0

9 (22.0%)

Illegible hand writing

0

0

2 (15.4%)

0

2 (4.9%)

Total

9 (100%)

14 (100%)

13 (100%)

5 (100%)

41 (100%)