What does a red top tube test for? Red top - Tube without gel separator, used mainly for serology and chemistry testing. Royal Rumble, SummerSlam and Survivor [HOST] Traffic Analysis. Go against artificial intelligence or friends. Real Cars in City is a 3D simulation game where you must prove your driving skills in various unique race tracks. A brewery coming to the Industrial Magnolia neighborhood of Seattle, WA. . A brewery coming to the Industrial Magnolia neighborhood of Seattle, WA. In real estate, no KPI speaks volume louder than the conversions. Go against artificial intelligence or friends. Real Cars in City is a 3D simulation game where you must prove your driving skills in various unique race tracks. Www red com tube.