Formed in 1972, our specialty laboratory has performed and perfected one test: calculus analysis. We examine approximately 50,000 stones annually, serving more than 10,000 clients throughout the United States and internationally. Our comprehensive stone analysis consists of region-by-region fracture dissection. Stones are examined from nidus to surface crystals by optical crystallography, which is the method preferred by most medical professionals. This technique provides the essential information for proper treatment.