If it is listed, the test should be ordered using the exact name in the manual. If the test is not listed, it is best to call the laboratory and inquire about the test or about using an alternative test to elicit the information needed. Sometimes the request form asks for clinical data in addition to the required diagnosis. At times, this information is vital in interpreting the results. Some information is essential to provide, such as the fasting status of a patient tested for plasma glucose, or use of a medication prior to collection of a sample during the course of a stimulation test.
Clinical information is especially important in interpretation of endocrine tests.
Attention to detail in filling out the referral laboratory's test request form is important. Correctly identifying the patient is especially important if more than on member of the family is seen in your office. An error could result in the wrong family member being given a test result. Many laboratories require that in addition to the patient's name, a second unique piece of patient identification should be given on the requisition and specimen label. This might be the patient's social security number or birth date.