Drainage

A) catheterization
B) chain-of-custody
C) pregnancy test
D) sulfosalicylic acid (SSA) test
E) ketonuria
F) urobilinogen
G) hematuria
H) nitrite
I) esterase
J) glycosuria
K) diabetes insipidus
L) sputum specimens
M) Papanicolaou
N) exudate
O) culturette

Exudate refers to fluid, such as pus or clear fluid, that leaks out of blood vessels into nearby tissues. The term is often used in medical contexts to describe the fluid that accumulates in a wound or as a result of inflammation. This fluid can contain various substances, including proteins, cells, and debris, which are a result of the body's response to injury or infection. In the context of drainage, exudate is the substance that is being drained from a wound or other site of inflammation in the body.