Quest Diagnostics is conveniently located in East Henderson in the Lake Mead Gateway Plaza. This location offers routine lab tests, blood and urine testing, drug screens, and pediatric services. Appointments are often available quickly, and the service is consistently described as prompt, efficient, and painless. The staff is noted as being very professional, knowledgeable, helpful, and courteous. The facility is easy to check into. It now offers COVID-19 antibody testing by appointment, with specific requirements listed. Patients are advised to visit the website for preparation tips and scheduling.