Dracula's health indicator? (5,5)

I believe the answer is:

blood count

This clue is a double definition.

'dracula's' is the first definition.
(Count Dracula sucks blood)

'health indicator?' is the second definition.
(number of blood cells in an amount of blood)

(Other definitions for blood count that I've seen before include "Dracula?" , "Cell number" .)

I've seen this clue in The Times and The Guardian.

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