Screening in child care.

For a disease to be susceptible to screening, it should be definable, important and treatable. Treatment begun earlier on the basic of discovery through screening must have some advantage. The period between first possible detection and optimal time for treatment must be substantial. Adequate facilities and resources for evaluation and care must be available. Finally, there must be a valid, low-cost test for the disease and there must not be a high cost associated with false-positive or false-negative results.