This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Cystinuria

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Cystinuria is a disorder of intestinal absorption and proximal renal tubular reabsorption of the dibasic amino acids - cystine, ornithine, arginine and lysine (remember COAL).

Inheritance is autosomal recessive with an incidence of 1 in 2500 live births in North America (1).

The dibasic amino acids are excreted in great excess in the urine of homozygotes.

This condition should not be confused with cystinosis or homocystinuria; the distinction between these conditions is often a subject of examination questions.

Reference:

  • Keen (1993). Urinary Calculi. Surgery, 11:2, 334-6.

Related pages

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page