No, it would not show up in preliminary or any kind of standard bloodwork. There are special tests that have to be done for acromegaly, and the blood has to be sent to the University of Michigan if you live in the US. They are the only ones that test for acromegaly and IAA here in the USA and North America.
Last studies I saw from 2014, showed that 1 in 4 diabetic cats can have acromegaly. So it's much more common than many vets think it is.
Acromegaly in Cats
"Prevalence of
acromegaly amongst
diabetic cats in North America and the UK was found to be around 1 in 4
diabetic cats seen in primary practice. The disease is therefore likely currently underdiagnosed."