What's the indicator that a person has kidney disease? is it low calcium, abnormal intact pth, high creatinine level, or what? explain.

Several things: Hi. Depending on the type of kidney disease, Several things are possible, but the most general lab test is an increase in serum creatinine. Some kidney diseases can present with normal creatinine and an increase in urinary protein, increase in blood pressure, blood in the urine, etc. Please see a kidney doctor (nephrologist) to be evaluated. They are excellent physiologists and physicians.