A blood test is a laboratory analysis performed on a blood sample that is usually extracted from a vein in the arm using a hypodermic needle, or via fingerprick.
H&H Bagels is a bagel company in Manhattan, in New York City.
H&H restaurant specializes in southern comfort food and soul food restaurant located on Forsyth Street in downtown Macon, Georgia.
The H&H Shooting Sports is an indoor shooting range located in Oklahoma City, Oklahoma, USA.
The Handel and Haydn Society, familiarly known as H+H, is an American chorus and period instrument orchestra based in Boston, Massachusetts.
The hematocrit (Ht or HCT), also known by several other names, is the volume percentage (vol%) of red blood cells in blood.
Hemoglobin (American) or haemoglobin (British); abbreviated Hb or Hgb, is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates (with the exception of the fish family Channichthyidae) as well as the tissues of some invertebrates.
Holland & Holland is a British gun-maker based in London, England which offers handmade sporting rifles and shotguns.
Howe & Howe Technologies (H&H, H and H, or HH) is a business in Waterboro, Maine that specializes in the fabrication and design of armored and military-grade vehicles, most notably the Ripsaw combat vehicle.
The.240 Magnum Rimless Holland & Holland (also known as the.240 Apex and the.240 Super Express) and the.240 Magnum Flanged are a pair of centrefire sporting rifle cartridges developed in English gunmakers Holland & Holland in the 1920s, primarily for use in hunting deer and plains game.