Rule out PSS
– 5 year old very small MN Yorkie presented for hematuria seen by my associate – single, spikey urolith seen on x-ray (so likely not ammonium biurate, at least 100%) and seen on ultrasound – pre bile acids 92.8 umol/L N<10, post 83 N<20; biochem and CBC otherwise wnl – u/s scan showed normal liver…