reply to Linda's questions about Esperanza: >Glassy urine with a specific gravity of 1.040 and a urobilinogen of 0.2. >list of bloodwork results I may be at a disadvantage because I did not see your previous letter (I very recently joined). Nevertheless I will attempt to answer your questions. The urinalysis results look unremarkable to me. The specific gravity indicates that Espie is able to concentrate her urine (which means her kidneys are functioning properly. If the sp. gr. was low (< 1.015) it can be an indication of disease (kidneys, liver, diabetes, etc.) The urobil. is a little high, but not enough to concern me.(It is important what the normal values are for the lab used. The normal values vary a little from lab to lab). The bloodwork results are best interpreted with a through physical exam, and clinical signs. The elevated lymphocyte count could indicate infection or something as serious as lymphosarcoma (LSA). With the decrease in white blood count it is likely due to a viral infection and with the more serious LSA there should be other symptoms (enlarged lymph nodes, anorrexia,weight loss). It would be worthwile at the least repeating the CBC to see where white blood and lymphocyte counts are. The mild hair loss/thinning could very likely be the early warning sign of an adrenal tumor (this is by far the most common disease causing hair loss in ferrets). I hope this helps you. Dr. Weiss c [log in to unmask] 301-299-4142 [Posted in FML issue 1045]