Sully experiment designed to detect abnormalities (5,4)

I believe the answer is:

smear test

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'designed to detect abnormalities' is the definition.
I can't judge whether this definition defines the answer.

'sully experiment' is the wordplay.
'sully' becomes 'smear' (synonyms).
'experiment' becomes 'test' (test is a kind of experiment).
'smear'+'test'='SMEAR TEST'

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I've seen this clue in The Irish Times.

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