ATC code V04 Diagnostic agents is a therapeutic subgroup of the Anatomical Therapeutic Chemical Classification System, a system of alphanumeric codes developed by the World Health Organization (WHO) for the classification of drugs and other medical products. Subgroup V04 is part of the anatomical group V Various.

Codes for veterinary use (ATCvet codes) can be created by placing the letter Q in front of the human ATC code: for example, QV04. ATCvet codes without corresponding human ATC codes are cited with the leading Q in the following list. National versions of the ATC classification may include additional codes not present in this list, which follows the WHO version.

V04B Urine tests

Empty group

V04C Other diagnostic agents

V04CA Tests for diabetes

V04CA01 Tolbutamide

V04CA02 Glucose

V04CB Tests for fat absorption

V04CB01 Vitamin A concentrates

V04CC Tests for bile duct patency

V04CC01 Sorbitol

V04CC02 Magnesium sulfate

V04CC03 Sincalide

V04CC04 Ceruletide

V04CD Tests for pituitary function

V04CD01 Metyrapone

V04CD03 Sermorelin

V04CD04 Corticorelin

V04CD05 Somatorelin

V04CD06 Macimorelin

V04CE Tests for liver functional capacity

V04CE01 Galactose

V04CE02 Sulfobromophthalein

V04CE03 Methacetin (13C)

V04CF Tuberculosis diagnostics

V04CF01 Tuberculin

V04CF02 Mycobacterium tuberculosis, recombinant antigens

V04CG Tests for gastric secretion

V04CG01 Cation exchange resins

V04CG02 Betazole

V04CG03 Histamine phosphate

V04CG04 Pentagastrin

V04CG05 Methylthioninium chloride

V04CG30 Caffeine and sodium benzoate

V04CH Tests for renal function and ureteral injuries

V04CH01 Inulin and other polyfructosans

V04CH02 Indigo carmine

V04CH03 Phenolsulfonphthalein

V04CH04 Alsactide

V04CH05 Relmapirazin

V04CH30 Aminohippuric acid

V04CJ Tests for thyreoidea function

V04CJ01 Thyrotropin

V04CJ02 Protirelin

V04CK Tests for pancreatic function

V04CK01 Secretin

V04CK02 Pancreozymin (cholecystokinin)

V04CK03 Bentiromide

V04CL Tests for allergic diseases

QV04CQ Tests for mastitis

QV04CV Tests for respiratory function

QV04CV01 Lobeline

V04CM Tests for fertility disturbances

V04CM01 Gonadorelin

V04CX Other diagnostic agents

V04CX01 Indocyanine green

V04CX02 Folic acid

V04CX03 Methacholine

V04CX04 Mannitol

V04CX05 13C-urea

V04CX06 Hexaminolevulinate

V04CX07 Edrophonium

V04CX08 Carbon monoxide

V04CX09 Patent blue

V04CX10 Pafolacianine

V04CX11 Lithium chloride

V04CX12 Xenon

V04CX13 Pegulicianine