Naturally produced by the body to attach itself to certain cells to cause dilation of blood vessels and contraction of smooth muscles

A) plaque
B) immunoassays
C) radioallergosorbent test (RAST)
D) histamine
E) epinephrine
F) phenylketonuria (PKU)
G) liver panel
H) kidney function test
I) creatine kinase (CK)
J) prothrombin time (PT)

Radioallergosorbent Test

A blood test used to identify specific allergies by measuring the amount of IgE antibodies present in the bloodstream.

Histamine

A substance normally present in the body.

Immunoassays

A biochemical test that measures the level of a substance in a biologic liquid, typically serum or urine, using the reaction of an antibody or antibodies to its antigen.