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 Functions. One of the more useful extensions of Excel via VBA is the creation of user-defined. functions (UDFâs). User-defined functions play a similar role to built-in functions, such as SQRT, PI, and VLOOKUP. Functions are used in Excel formulas or VBA. expressions, and they return values in the place where the function name appears. Examples: computing the area of a cone, base + lateral.