Tapotement

Tap the kidneys with the fingertips of your hand. It normally should be painless. If pain is felt it is a positive sign.
 * Unilaterally positive for acute pyelonephritis, perinephritis (Also if infiltration of the surrounding is present).
 * Bilaterally positive for glomerulonephritis, bilateral pyelonephritis (obstructive uropathy).

Source



 * ZELENKOVÁ, Jitka, et al. Pracovní text z Interní propedeutiky [online]. [cit. 2014-01-14]. .