Estimated tax is the method used to pay Social Security and Medicare taxes and income tax, because you do not have an employer withholding these taxes for you. Form 1040-ES, Estimated Tax for Individuals (PDF), is used to figure these taxes. Form 1040-ES contains a worksheet that is similar to Form 1040.
Why It's Done. The main reason doctors order the IGFBP-3 test is for its usefulness as an indicator of whether someone is producing a normal amount of human growth hormone. In this way, the IGFBP-3 test is used to check for pituitary gland disorders and abnormalities in growth hormone production.
ELISA is a test that detects and measures antibodies in your blood. This test can be used to determine if you have antibodies that are related to certain infectious conditions. Antibodies are proteins that the body produces in response to harmful substances (antigens).An ELISA test may be used to diagnose: 1  HIV (the virus that causes AIDS). 2  Lyme disease.his test can be used to determine if you have antibodies that are related to certain infectious conditions. Antibodies are proteins that the body produces in response to harmful substances (antigens). An ELISA test may be used to diagnose: 1  HIV (the virus that causes AIDS). 2  Lyme disease.