|Dietary restriction or special diet.|
Foods containing appreciable amounts of collagen should be avoided in the 24 hrs prior to specimen collection. These foods include meats an meat products, gravy and even confectionary and ice-cream containing gelatin.
The patient fasts from 8pm on the night before collection. On waking the bladdder is voided and urine discarded. The next urine is collected 1-2 hours later at which time breakfast may be eaten.