Immunoglobulin D (Serum) Test

An immunoglobulin test is performed to measure the level of antibodies in the blood. Immunoglobulins, also known as antibodies are proteins made by the immune system to fight various bacteria, viruses, and toxins. Mainly, there are five types of immunoglobulins namely IgA, IgD, IgE, IgM, and IgG. IgD is mostly found on the surface of special immune cells called B-cells, regulating the B-cell function. The immunoglobulin D blood test helps determine the level of IgD in blood. It helps diagnose immune deficiencies in the body. In some cases, a sample of cerebrospinal fluid (CSF) is collected by a lab technician from the lower back using a lumbar puncture or a spinal tap.

For this test, no special preparation is required. You can get your blood test done with normal food intake. You can prefer to wear a sleeveless shirt or a loose full sleeve shirt which can be folded easily at the time of the test.

Blood test A band is wrapped around the arm, preferably near the elbow pit such that vein is clearly seen The area is cleaned with 70% alcohol The needle is inserted into the visible vein causing a small prick and the required amount of blood sample is collected The collected blood is transferred into the blood container from the nozzle and the syringe is hygienically disposed immediately Cerebrospinal Fluid - CSF In case of CSF, you are advised to sit with your back straight on a table or lying on either side with your knees folded towards the chest The technician will initially inject you a painkiller to numb the pain while the test Further, the technician will insert a hollow needle between the two vertebrae and remove some cerebral fluid to test