The location I have been using for years no longer has Saturday hours. The appointment I made specified this exact location. When it was accepted, Labcorp changed the location but did not highlight this change. Found the new location. Way too crowded; even with six feet distancing everyone felt too close together. Guess I'll be going to Quest for weekend appointments from now on. User's recommendation: Triple-check location where appointment is scheduled. Labcorp changes it during the reservation process yet does not tell you this.