Serum-separating tube Serum-separating tube Serum-separating tubes, also known as serum separator tubes or SSTs, are used in medical clinical chemistry tests requiring blood serum. SSTs are sometimes called "marble-top tubes," "tiger-tops," or "gold-topped tubes", referring to the stoppers which are either gold, red with a gold ring on top, or marbled red and grey. Marble-top tubes are also referred to as "tiger-tops" in some clinics. SPS tubes have a paler colour, sometimes leading confusion; these are known as "yellow tops" not "gold". Trademarked versions include Covidien "Corvac" tubes. They contain a special gel that separates blood cells from serum, as well as
Blood Sweat and Wars Features the talents of Val Brodrick on tin whistle and uilleann pipes and Steve Gormley on Bodrahn & Backing Vocals. Produced by Andy Bridger and Stephen Burns. The song speaks from the perspective of a world-weary Traveling man and portrays a somewhat uncompromising and stark vista, whilst being intended as a social commentary and highlighting some of the issues faced by this section of society, it also poses questions of social inclusion, acceptance and equality. Blood Sweat and Wars Blood, Sweat and Wars is an upcoming Irish film written, produced and directed by Stephen Patrick Kenny and based on events