Covid Test Detected Abnormal Reference Range Not Detected. Lab test results are expressed in different ways. A reference range may also be called normal values. you may see something like this on your results:
Often, the key to identifying the cause of this laboratory finding is knowledge of the. Prolonged protime profile (117866) prolonged activated partial thromboplastin time (aptt) (117796) in many cases, a clinician must deal with an extended pt or aptt in a patient who is not receiving anticoagulant therapy. This means that the virus was not found in your sample.