A blue top blood tube contains buffered sodium citrate(buff. Na citrate). This chemical has three main functions: 1) To prevent blood from clotting 2) To preserve the shape of red and white blood cells 3) To prevent platelets from clumping
Generally blue tubes are used for the following tests: Prothrombin Time (PT), Partial Thromboplastin Time (PTT/APTT) and International Normalized Ratio (INR).
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A light blue top tube is typically used for Protime blood collection, as it contains sodium citrate as an anticoagulant.
Blue top tube which contains citrate.
For a PTT lab draw, a light blue top tube is typically used. This tube contains sodium citrate as an anticoagulant to prevent blood clotting during the test.
The color top tube used for prothrombin time (PT) is typically light blue. This tube contains sodium citrate as an anticoagulant, which is necessary to prevent blood clotting during PT testing.
The color of the top tube for HgA1C blood test is lavender. This type of tube contains EDTA as an anticoagulant additive to prevent blood coagulation.
A light blue top tube containing sodium citrate is typically used for collecting blood samples for D-dimer testing, as citrate is an anticoagulant that prevents blood clotting during processing. The tube must be filled completely to ensure the proper blood-to-anticoagulant ratio.
The collection tube for blood cholesterol testing is typically a red or gold/tiger top tube. The red tube usually contains a clot activator, while the gold/tiger top tube contains a gel separator to separate serum from the blood cells after centrifugation.
A blue-top tube (sodium citrate) is typically used to collect blood samples for Prothrombin Time (PT) testing.
Blood for a folate test is typically drawn in a lavender-top tube, which contains the anticoagulant EDTA. The lavender-top tube is used for collecting whole blood specimens for hematology testing.
Black top (sodium citrate tube) or light blue tube. They both contain sodium citrate. I failed this question on my final, I knew a black top tube is used but it was not given to me as a choice. I did not think hard enough to come to the conclusion that a light blue tube would be another option.
The tube top used to collect blood for sedimentation rate testing is typically a lavender/purple top tube. This tube contains the anticoagulant EDTA to prevent the blood from clotting during testing.
A red top tube typically contains serum after the blood has been separated by centrifugation. Plasma is obtained from blood collected in tubes with anticoagulants.