The halogens all form binary compounds with hydrogen, and these compounds are known as the hydrogen halides: hydrogen fluoride (HF), hydrogen chloride (HCl), hydrogen bromide (HBr), hydrogen iodide (HI), and hydrogen astatide (HAt).
finger stick. 1  the act of puncturing the tip of the finger to obtain a small sample of capillary blood. In some procedures the hand may be first immersed in warm water for 10 minutes to arterialize the capillary blood or give it characteristics similar to those of arterial blood.
Trigger finger is diagnosed with a physical exam of the hand and fingers. In some cases, the finger may be swollen and there may be a bump over the joint in the palm of the hand. The finger also may be locked in bent position, or it may be stiff and painful. No X-rays or lab tests are used to diagnose trigger finger.