Quest now offers COVID-19 antibody testing by appointment. Not available to patients experiencing COVID-19 symptoms within last 10 days; face covering required at all locations. Welcome to Quest Diagnostics. PSC located off of MD-97 North. Visit our website, QuestDiagnostics.com, to get tips for preparing for your test and to schedule an appointment. This location, along with blood and urine testing, features: Routine Lab Test; Pediatric Specialty; Glucose Tolerance Test; Blueprint for Wellness; Blueprint for Wellness w/biometrics (height, weight and blood pressure)