Hemoglobin: The oxygen-carrying pigment and predominant protein in the red blood cells. Hemoglobin forms an unstable, reversible bond with oxygen. In its oxygenated state it is called oxyhemoglobin and is bright red.
Caffeine by McDonalds Iced Coffee Size. 1  Medium (16 floz): 133mg. 2  Large (22 floz): 200mg. 3  Extra Large (32 floz): 320mg.
What caught my eye in the chart (pictured below) was the varied amounts of caffeine in same-sized coffees at popular fast-food chains. A 16-ounce Starbucks coffee contains 330 milligrams of caffeine â more than twice the caffeine of a 16-ounce McDonald's coffee, which contains 145 milligrams.sked why their coffee had substantially lower amounts of caffeine compared to Starbucks, McDonald's spokesperson Danya Proud said her company could not confirm the FDA findings, as we do not know the process by which this calculation was made or what blend of our coffee was tested..