<prompt> Blood of 45 yrs old male shows increased HVA. This patient is most likely to show -PCCSchizophreniaDepressionParkinsons disease  <response>: Ans- B Schizophrenia Increased levels of HVA are found in the schizophrenia but this does not have any clinical utility. It is a research-based parameter based on the fact that schizophrenia is an illness caused by Hyperdopaminergic state. HVA is a metabolite of dopamine higher levels are found in CSF and plasma. 