Insulin is a type of hormone which enables the cells present in the human body to absorb glucose. The purpose of the Insulin test is to verify or designate the amount of this hormone present in the blood.
Glucose is nothing but sugar, which comes from the food humans eat. Glucose is thus a source of energy and it is due to glucose that a human body can perform all the necessary functions.
After a meal, the glucose levels in the body rise due to which the pancreas start producing the insulin hormone and release it in to the blood stream. The Insulin test is done to make sure that the level of glucose and insulin in the blood are balanced and normal. Too much or too less of either of these things can cause a lot of problems.
Along with the levels of insulin and glucose, this test is also performed in order to understand to cause behind Hypoglycemia (low blood sugar) or high levels of blood sugar.
Another purpose served by this test is to monitor the insulin resistance levels in people as in some cases the tissues lose sensitivity for insulin which in turn increases the production of insulin by the pancreas.
This kind of insulin resistance is mainly seen in people suffering from Type 2 diabetes as well as in women who are ailing with polycystic ovarian syndrome.
The doctor or the physician may let the patient know about certain special preparations regarding the test. For example the person undergoing the test maybe asked to not eat or drink any food and liquid for eight hours prior to the test.
In some other cases the doctor asks the patient to come for the test immediately after he/she has eaten a full meal.
The test in itself is simple as it is a standard blood test wherein the procedure is not as painful and the tests are conducted on the withdrawn blood sample. The diagnosis depends on the results of the test conducted.