ORANGE COUNTY EARNINGS

Hycor Biomedical Inc.: The Garden Grove medical diagnostic products company said it lost $434,000, or 6 cents a share, for the third quarter, compared with a net loss of $3.6 million, or 50 cents a share, for the 1997 third quarter. Revenue dropped 6% to $4.4 million from $4.7 million. The company attributed the sales decline to discontinued products in its nonclinical immunology product groups.