Reference Range(s) Creatinine is the endproduct of creatine metabolism. Creatine is present primarily in muscle and the amount of creatinine produced is related to total skeletal muscle mass. Daily creatinine production is fairly constant except when there is massive injury to muscle. The kidneys excrete creatinine very efficiently and blood levels and daily urinary excretion of creatinine fluctuates very little in healthy normal people.
Schizophrenia is a disease that has several types of symptoms, some of which start earlier than others. The more well-known symptoms, such as hallucinations and delusions, typically start when a man is around 16 to 19 years old or in his early 20s.
To be diagnosed with schizophrenia, a patient must have psychotic, loss-of-reality symptoms for at least six months and show increasing difficulty in functioning normally. Before the six-month period is reached, the person is diagnosed as having a schizophreniform disorder.onversely, the inability of patients with schizophrenia to sort and interpret stimuli and select appropriate responses is one of the hallmarks of the disease. The symptoms of schizophrenia are generally divided into three categories, including positive, disorganized, and negative symptoms.