A product is any tangible or intangible good or service that is a result of a process and that is intended for delivery to a customer or end user. More specifically for the purposes of the FHIM Common Product model, a product is a commodity offered for sale; an article of commerce; a kind of merchandise that is involved in the provision of healthcare (e.g., an x-ray machine), consumed during the provision of care (e.g., a prosthesis, a medication, a bandage), or is itself the subject of healthcare-related activities (e.g., testing the surface of a machine for pathogens, testing food for food-borne pathogens). This class deals with things that can be ordered, purchased, consumed, administered, maintained, and/or disposed of even if the thing is originally naturally occurring. However, do not use this class to indicate that a patient is allergic to eggs. Use Substance for generic eggs. But to order a gross of Farmer Smith’s eggs, or to test an egg from a box of Farmer Smith’s eggs, this class is appropriate. Note that in situations where the same product may be sold in "saleable units" of different sizes, this class defines the product itself, whereas the saleable units are described in other classes. For example, if Pfizer sells Lipitor 40 MG Tablets in a 30 count bottle and a 90 count bottle, the product in those bottles is identical (and indeed may have come from the same manufacturing lot), but the bottles have different National Drug Codes. In this example, this class would contain Pfizer Lipitor 40 MG Tablet, while the PackagedMedicinalProduct class will contain information about the 30 and 90 count saleable units.