There are specialists that would never ajdust bp meds (ophthalmologists) as I did in inpatient psychiatry. I once had an er doc find it funny i was ordering a lipid level...he said he never orders those. Even as a forensic psychiatric expert witness, i had to discuss LFTs and ammonia levels in my report to opine on adjudicative competency restorability (the defendant had delirium due to hepatic encephalopathy) as the attorney was not going to spring for a GI expert. The forensic psychology report on this defendant was not able to discuss restorability and misdiagnosed the defendant with neurocognitive disorder (fyi long standing hepatic encephalopathy can have long term neurocognitive effects but you wont know until the hepatic encephalopathy is resolved...unless i am mistaken).