About Us

The Urinary Stone Analysis laboratory will be officially ending its urinary stone analysis service on July 31, 2020.  We will no longer be accepting any new submissions for analysis afteJULY 17, 2020.  Please make note of this date as we will not be able to return samples to you if they are received after this date. Click here for more information (pdf)

G. V. Ling Urinary Stone Analysis Laboratory

Urinary stone disease is a common and often frustrating disease for companion animals. The G. V. Ling Urinary Stone Analysis Laboratory provides quantitative analysis of urinary calculi (urinary stones) primarily utilizing the oil immersion method of optical crystallography and infrared spectroscopy (IR). When these diagnostics ares insufficient to identify the mineral components present in the layers of the calculus, X-ray diffractometry (XRD), scanning electron microscopy (SEM) with energy dispersive x-ray (EDX), and electron probe microanalysis (microprobe) can be utilized- please contact the laboratory if you are interested in these options for research or diagnostic purposes.

By providing detailed mineral analyses of calculi submitted to our laboratory, we are able to provide data to help manage and prevent stone disease in our patients. While most stones we analyze are removed from cats and dogs, we have capabilities to provide detailed analyses of stones from a variety of species such as guinea pigs, dolphins, tortoises and ferrets. The data generated at our laboratory is used to help evaluate trends in stone composition, and what, if any, effect published therapeutic strategies for stone prevention have on the prevalence of stone disease in animals.

In addition to mineral analyses of stones, the G.V.Ling USAL also has a Nanoparticle Tracking Analysis (NTA; Malvern Instruments) system that can be utilized by researchers on campus as a fee for service. This system is an excellent tool for evaluation of the size and surface characteristics of various nanoparticles and exosomes.  Please contact the USAL at: stonelab@ucdavis.edu to inquire about costs and availability of use.

Mission Statement

The G. V. Ling Urinary Stone Analysis Laboratory is dedicated to provide reliable, accurate and prompt layer by layer stone analyses for our clients. We strive to maintain the most current scientific techniques available for these analyses for clinical and research endeavors. Furthermore, we are committed to helping veterinarians manage their patients. We use science, technology and education as our tools.