Going by live data, microbe mutates with it (9)

I believe the answer is:

biometric

'going by live data' is the definition.
(based on measurements of the body)

'microbe mutates with it' is the wordplay.
'mutates with' indicates an anagram.
'microbe' with its letters mixed up with 'it' gives 'BIOMETRIC'.

(Another definition for biometric that I've seen is " Applying statistical analysis to biology".)

I've seen this clue in The Times.

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