Capillary sample

Blood sample - capillary; Fingerstick; Heelstick

A capillary sample is a blood sample collected by pricking the skin. Capillaries are tiny blood vessels near the surface of the skin.

Phenylketonuria test

Blood is routinely drawn from newborn infants for testing. Blood is obtained by a heel stick and collected on a special blotter paper. Routine testing includes phenylketonuria and blood type. Many hospitals include other tests such as thyroid function, hemoglobin S (sickle cell disease), or may test for other blood disorders (hemoglobinopathies). Testing can be tailored to the local population, taking into account race and ethnic background in determining what routine testing should be done.

Newborn screening testing

Blood is routinely drawn from newborn infants for testing. Blood is obtained by a heel stick and collected on a special blotter paper. Routine testing usually includes phenylketonuria, thyroid function, hemoglobin S (sickle cell disease), and may test for other disorders. Newborn screening programs vary from state to state. Testing can be tailored to the local population, determining what routine testing should be done.

Capillary sample

A capillary sample of blood is obtained by pricking the skin's surface to obtain a drop or several drops of blood for laboratory testing. The usual location of capillary blood sampling is the skin of the finger or heel.

How the Test is Performed

How the Test will Feel

Why the Test is Performed

What Abnormal Results Mean

Risks