Medical laboratories are laboratories that focus specifically on the healthcare sector. If, for example, a doctor or specialist requires information about the blood, urine or tissue of a patient in order for a diagnosis to be made on the basis of this information or to check the effectiveness of a treatment, he or she engages the services of a medical laboratory. These laboratories are mainly found in hospitals, however, there are also independent medical laboratories. A medical laboratory employs specialists who are able to interpret the test results and advise the client accordingly. Like test laboratories medical laboratories also use calibrated equipment.