A new diagnostic test is available for individuals who have tested positive for the AIDS virus, but who have not developed particularly significant or severe symptoms.

Dr. Harry Gibbons, executive director of the Salt Lake City-County Health Department, said the test, known as the HIV antigen test, may provide very important information regarding the stage of the disease. It could also determine the need for treatment with AZT, a currently available antiviral drug that has proved beneficial to some AIDS patients.Beginning May 25, the local health department's Sexually Transmittable Disease Clinic will offer the HIV antigen test from 1 to 5 p.m. Monday; from 1 to 6 p.m. Wednesday, and from noon to 4 p.m. Friday.

The first 100 clients requesting the test will be charged only $25, due to special funding available. After the first 100 clients, or after June 15, the charge will be $40.

Gibbons stressed that the service is limited to those who are HIV sero-positive only.

For more information call the health department at 534-4666, or the Salt Lake AIDS Foundation at 531-8238.