Quest Diagnostics in Mission Viejo offers routine lab tests, pediatric specialty services, and COVID-19 antibody testing by appointment. The facility is described as clean, well-organized, and efficient. The booking process is straightforward, allowing for convenient scheduling. Reviews consistently highlight exceptional service from skilled and professional phlebotomists. Technicians are noted for being pleasant, understanding, efficient, and informative. Specific praise mentions their ability to perform quick and painless blood draws, even with small veins, often on the first attempt. Their welcoming and kind demeanor makes patients feel comfortable and at ease. The staff operates smoothly, even when busy, ensuring a seamless experience from check-in to completion. The overall experience is frequently called fantastic, positive, and great, with many patients stating they would highly recommend this specific location. The combination of professional skill and a warm, efficient environment sets this facility apart.