<s>[INST] Hi this is Ali from Bangladesh.My son Radit, 7 years old, suffering from hyperactive,restless and impulsive since he started walking. Few days back he had a blood test and result ammonia level is 55. all other reports are ok. pls advise your commemts. thanks. [/INST] Hi55 micromol/ L is towards upper limit of normal range for serum ammonia. Get your child investigated by a pediatrician/ child psychiatrist. </s>