Lab

• The most common body fluid received is peritoneal fluid
• peritoneal fluid results from low blood osmolality, causes fluid to leak out
• macroscopic evaluation of body fluid includes the color, clarity, and volume
• knee fluids are microscopically evaluated for uric acid crystals (called monosodium urate crystals in knee fluid), which are indicative of gout
• mesothelial cells are

  • part of membrane
  • sloughed off routinely
  • large (12-30 micrometers)
• mesothelial cells have abundant cytoplasm, an eccentric nucleus with regular borders and loose chromatin pattern

  found in serous fluid
• mallorette cells - nucleus is foot shaped; lymphocyte