Lab tech (7)
I believe the answer is:
analyst
'lab tech' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for analyst that I've seen before include "One with detailed understanding (of psyche or systems)" , "Scientific or technical worker" , "Someone skilled in detailed examination of structure" , "One making detailed examination" , "Expert who studies data and recommends appropriate action" .)