Glossary

l
lactic acid
byproduct that occurs when muscle tissue contracts and does not have enough oxygen to fully metabolize glucose. Lactic acid can build up in joints and cause pain and can be a side effect of some drug interactions.
LDH
lactate dehydrogenase; a type of enzyme found in various parts of the body, including the liver
leukopenia
abnormal decrease in a type of white blood cell called a leukocyte
liver
vital organ responsible for manufacturing various proteins, purification of the blood, and processing drugs and other chemicals into harmless substances
liver enzyme tests
blood tests used to detect normal or abnormal levels of liver enzymes that can reflect the presence of liver damage or inflammation (like tests for AST and ALT)
liver failure
condition in which a large portion of the liver is damaged, causing severe problems with liver function
liver function tests
bloot tests used to assess the liver or biliary system's ability to manufacture substances (like tests for bilirubin, albumin, or prothrombin)
local anesthetic
drugs that make a person unable to feel pain in a particular part or parts of the body but which do not cause loss of consciousness
Lockjaw
a condition in which the jaw becomes stiff and clenches; can be a harm associated with smoking crack and crystal meth
lube
lubricant used to help insertion during vaginal or anal penetration, or reduce friction during masturbation
lymphocyte
type of white blood cell