The length of time varies. Those who did not provide an email can expect a phone call from a DPH representative approximately five days after taking the test. Most tests sent to the DPH State Lab are processed within 24 to 48 hours, however, the length of time can vary depending upon the number of tests being run that day. If a sample is sent to, and processed by, a commercial lab, your results may take longer as they are sent out of state for testing.