Cause(s)

Number of samples rejected (%)

Improper collection technique

11 (13.58)

Incorrect container/tube

3 (3.70)

Patient ID error

5 (6.17)

Flow cytometry specimen > 48 hours

28 (34.57)

Delayed testing

10 (12.35)

Delayed specimen processing

9 (11.11)

Other causes

15 (18.52)