A 75 year old man is reviewed in his GP surgery because his wife things he has become more forgetful over the past few months. He is found to have significant cognitive impairment. Which of the following is least useful before making a diagnosis of dementia?

10 votes
B12 levels
 
0% / 0 votes
Lumbar puncture
 
80% / 8 votes
Thyroid function tests
 
20% / 2 votes
Depression screening
 
0% / 0 votes
CT head
 
0% / 0 votes


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