What Size Kidney Stones Pass On Their Own. A kidney stone is likely considered too large to pass on its own if it is larger than 5 8 mm in size. Based on their size they may have difficulty moving through the urinary tract out of the body.
Around 80 of kidney stones that are smaller than 4 millimeters mm will pass on their own in about 31 days. If you ve had a kidney stone it may have been the most painful experience of your life. Shock wave lithotripsy swl is a procedure used by doctors to treat stones in the kidney and ureter that are big in size.
Kidney stones or nephrolithiasis may be able to pass unassisted through the ureter bladder and urethra if they are less than 4 5 mm in size.
The good news is that about 80 of stones this size will pass on their own. The chances of passing a stone this size are lower. Let kidney stones pass. Stones that are 4 6 millimeters mm in size require treatment but most of them also pass naturally in around 45 days.