In this test, a tall, thin tube holds a sample of your blood. The speed at which the red blood cells fall to the bottom of the tube is measured. Inflammation can cause abnormal proteins to appear in your blood. These proteins cause your red blood cells to clump together.
From Wikipedia, the free encyclopedia. A user-defined function (UDF) is a function provided by the user of a program or environment, in a context where the usual assumption is that functions are built into the program or environment. 1 BASIC language.
User defined function. 1  In Python a user defined function's declaration begins with the keyword def and followed by the function name. 2  Function may take arguments(s) as input within the opening and closing parentheses, just after the function name followed by a colon.