![]() ![]() Pathologists have worked to overcome challenges with obtaining supplies related to COVID-19 testing, but in recent weeks critical shortages of blue-top tubes have drawn concern over continued patient access to coagulation tests from pathologists across the United States. The pandemic has disrupted various industries and supply chains across the globe. Pathologists across the country have reported shortages in their laboratories and are seeking guidance for providing these important tests until blue-top tube supply levels are adequate. Potassium oxalate removes calcium and acts as an anticoagulant.The CAP urged the Department of Health and Human Services (HHS) and other key federal agencies to take immediate actions to increase the supply of sodium citrate light blue-top tubes used for coagulation testing. What additive does: Sodium fluoride acts as an antiglycolytic agent to ensure that no further glucose breakdown occurs within the sample after it is taken.Additive: Potassium oxalate and Sodium fluoride.Laboratory uses: Hematology testing (ESR, CBC w/diff., HgBA1c)īlood film for abnormal cells or malaria parasites, reticulocytes, red cell folate, Monospot test for EBV, parathyroid hormone (PTH).What additive does: Removes calcium preventing clotting of blood.Additive: EDTA (Ethylenediaminetetraacetic Acid). ![]() These bottles are generally used for haematology tests where whole blood is required for analysis. Laboratory uses: Chemistry Testing (Plasma determinations in chemistry) : ammonia, carboxyhemoglobin & STAT electrolytes, chromosome screening, insulin, renin and aldosterone.What additive does: Inhibits thrombin formation to prevent clotting.Additive: Heparin (Sodium/Lithium/Ammonium).This less commonly used bottle is for biochemistry tests which require heparinised plasma or whole blood for analysis. PT (Prothrombin Time – evaluates the extrinsic system of the coagulation cascade & monitors coumadin therapy)ĪPTT/ PTT (Activated Partial Thromboplastin Time – evaluates the intrinsic system of the coagulation cascade & monitors heparin therapy) Laboratory uses: Coagulation (clotting process-P.T).What additive does: Binds and remove calcium to prevent blood from clotting.The blue bottle is used for haematology tests involving the clotting system, which require inactivated whole blood for analysis. Tubes with ACD are for cellular studies, HLA typing, paternity testing. The SPS aids in the recovery of microorganisms by slowing down/ stopping the actions of complement, phagocytes, and certain antibiotics. ![]() Tubes with SPS – For Blood and bodily fluid cultures (HLA, DNA, Paternity).
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