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. TSPOT: M-F 6:30 am-3:30 pm. This site closes early @ 2PM every 4th Wednesday of the month for training. NEAR PUBLIX This site closes early @ 2PM every 4th Wednesday of the month for training. 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; Glucose Tolerance Test