11 year old son has vomited for two weeks, same time every day starting 5pm-2am. eating well, no dairy, not dehydrated. slightly raised creatinine, little protein in urine. raised allergy marker. ?

Not normal: These findings are not normal and deserve to be worked up by your family physician, who can refer if needed.

A few possibilities: Kids can have recurrent vomiting for different reasons: infection, cyclic vomiting (also sometimes called abdominal migraines), increased intracranial pressure, anxiety, uremia, medication side effects, and other causes. I recommend you see your child's doctor and possibly get a referral to a pediatric gastroenterologist. Elevated creatinine and urine protein are concerning for a kidney problem.