Profile: Tri-Delta Diagnostics, Inc. provides laboratory products to the research, clinical and veterinary markets. We offer a variety of products with an emphasis on acute phase proteins, veterinary assays, autoimmune & infectious diseases. Our Equitest ES is an easy, rapid & convenient test for determining the pregnancy status of mares from 120 days after mating until the expected time of foaling, and it is a self contained test system designed to detect elevated pregnancy specific steroid concentrations thereby aid the determination of pregnancy status.