Ключевые слова: additive, blood, blood collecting tubes, blood test, bloodwork, blue, citrate tube, clot, coagulation, collection, colorful, diagnosis, empty, gel tube, green, health, healthcare, illness, isolated, laboratory, medical, needle, pathology, plasma, procedure, red cells, sample, serum separator tube, set, sharp, sickness, sodium citrate, syringe, test, tubes, vacutainer, vacuum, white cells,