A dilution kit for and a method of diluting concentrated solutions used to treat allergic symptoms are disclosed. The dilution kit may comprise a case comprising: a base and a cover hingedly coupled to the base. A foam pad may be removably coupled within the base, the foam pad defining a plurality of vial apertures. A plurality of vials may be removably positionable within the plurality of vial apertures. The method may comprise: removably positioning at least one of a plurality of vials in an upwardly facing position within at least one of a plurality of apertures defined in a layer of foam padding in a base of a case of a dilution kit and placing a predetermined amount of one of a diluent, a concentrated solution, and a combination thereof into at least one empty vial of the plurality of vials.
