#acr19 ⁦@RheumNow⁩ Dr West’s Pearls: - at 40x magnification of synovial fluid, 1 WBC per hpf = 500 WBC/ uL (hence, 5 WBCs seen= 2500 WBC/uL which means the pt has an inflammatory fluid - you don’t have to wait for the lab results!) https://t.co/nChSnFq5NL