Urine, random or 24 hour collection or urine absorbed onto filter paper.
Submit only one of the following specimens:
Filter Paper Urine Collection
A filter paper collection kit may be obtained from Children’s Laboratory. The kit includes one 10 x 10 cm absorbent filter paper, patient identification form and directions for specimen collection.
Collect as follows:
Label filter paper with patient name and date and time of collection in pencil (not ink).
For young infants, collect from a thoroughly wet diaper not contaminated with stool as described below. Remove the top layer of the diaper if it is the disposable type. Ultra absorbency diapers may present a problem in collecting enough urine and are not recommended for this collection. If utra absorbancy diapers are used, place several cotton balls between the diaper and the baby’s genitals. The urine in the cotton ball can then be squeezed onto the filter paper. For toilet-trained children, collect 5 mL of urine and pour onto filter paper.
Remove top layer of diaper (if the disposable type). Place the filter paper between 2 wet portions of the diaper and press with fingertips until the filter becomes wet. Do this until the entire filter is damp (the filter will look darker). Alternatively, urine may be collected separately and then poured onto the filter until saturated.
Place wet filter on top of the plastic bag or on a clean non-absorbent surface. Let filter paper dry completely. Then place filter and the completed identification form in the envelope provided, and forward promptly.
Random / 24 Hour Urine Collection
If filter paper collection is not possible, submit 5 mL (Minimum: 1.2 mL) urine from a random or well mixed 24 hour urine collection in a urine container. Keep specimen refrigerated during a 24 hour collection. Send specimen refrigerated in plastic bottle. Forward promptly.