Changes

*'''Creatinine''' and '''potassium''' if the effusion is thought to be a uroabdomen.

*'''Creatinine''' and '''potassium''' if the effusion is thought to be a uroabdomen.

*'''Glucose''' (<2.8 mmol/l) and '''lactate''' (>5.5 mmol/l) should be measured and, where their values are below those shown, the inflammation is likely to be septic.

*'''Glucose''' (<2.8 mmol/l) and '''lactate''' (>5.5 mmol/l) should be measured and, where their values are below those shown, the inflammation is likely to be septic.

<font color = 'green'> Where the difference between blood and peritoneal fluid glucose concentration is greater then 2.8mmol/l and blood and peritoneal fluid lactate concentration is less than 5.5mmol/l, the inflammation is likely to be septic. - Peritoneal fluid has less glucose and more lactate than blood.</font color>

<font color = 'green'> Where the difference between blood and peritoneal fluid glucose concentration is greater then 2.8mmol/l (20mg/dl) and blood and peritoneal fluid lactate concentration is less than 5.5mmol/l (2.0mmol/l), the inflammation is likely to be septic. - Peritoneal fluid has less glucose and more lactate than blood.</font color>

In cats with [[Feline Infectious Peritonitis]], the effusion usually has a high protein content (>35g/l) with a high globulin: albumin ratio.  There is a variably high cellularity mainly composed of lymphocytes.

In cats with [[Feline Infectious Peritonitis]], the effusion usually has a high protein content (>35g/l) with a high globulin: albumin ratio.  There is a variably high cellularity mainly composed of lymphocytes.