Green Top Tube: This tube contains lithium heparin as an anticoagulant, and is used for certain hematology, chemistry and virology tests. Light Green Top Tube (PST): This tube is used for serum HCGs and other routine chemistry tests. The tube contains lithium heparin as an anticoagulant.
What happens if you underfill a tube with blood?
When the ratio of EDTA to blood is too high, as in an underfilled tube, the red cells tend to shrink. As a result, hematocrit, mean cell volume (MCV), and the mean corpuscular hemoglobin concentration (MCHC) will be affected.
Which tube additive preserves glucose?
Additive: All top tubes contain a glucose preservative (antiglycolytic agent): sodium fluoride (preserves glucose for 3 days) or lithium iodoacetate (preserves glucose for 24 hours).
What does SPS additive do?
Sodium polyanethole sulfonate (SPS; trade name, Liquoid) is a constituent in culture media used to grow bacteria from blood samples from patients suspected of bacteremia. SPS prevents the killing of bacteria by innate cellular and humoral factors.
What additive prevents glycolysis?
Sodium fluoride acts as the glycolytic inhibitor and prevents the cells in the blood from utilizing the glucose.
What color tube is glucose?
Container. Red-top tube, gel-barrier tube, or green-top (lithium heparin) tube.
Which color tube top has an SPS additive?
binding to the calcium present in the specimen. Tubes must be filled at least 2/3 full and inverted 8x. 14. Yellow Top Tube Additive: Contains the anticoagulant sodium polyanetholesulfonate (SPS).
What test is done in a tube that has the additive SPS?
Red top tube, which contains no additives, is used to test for antibodies, or for drug testing. Light yellow top tube contains the additive sodium polyanethol sulfonate (SPS). This tube is used for blood bank studies, human leukocyte antigen (HLA) phenotyping, DNA, and paternity testing.
What does SPS mean in phlebotomy?
SPS means. sodium polyanethol sulfonate. Effects of SPS. prevents blood from clotting and stabilizes bacterial growth.
