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 & Tears (Blood, Sweat & Tears album) Blood, Sweat & Tears (Blood, Sweat & Tears album) Blood, Sweat & Tears is the second album by the band Blood, Sweat & Tears, released in 1968. It was commercially successful, rising to the top of the U.S. charts for a collective seven weeks and yielding three successive Top 5 singles. It received a Grammy Award for Album of the Year in 1970 and has been certified quadruple platinum by the RIAA with sales of more than four million units in the U.S. In Canada, it enjoyed four runs and altogether eight weeks at No. 1 on the "RPM" national