What is considered high levels of protein in urine mine tested 555? how dangerous is this number?

Get checked: Yes. This is a high number though not necessarily dangerous. You are still in the age range of a benign condition called orthostatic proteinuria. But you may have other causes. Do you have diabetes? Do you have untreated hypertension (high blood pressure)? Were your kidney blood tests abnormal? Do discuss this with your medical provider.

Guideline: Protein in the urine measuring more than 30mg is considered abnormal and over 300mg is considered significant and indicative of some degree of kidney pathology. This is best evaluated by a nephrologist(kidney specialist) for diagnosis and treatment.