Final answer:
The blood test showed agglutination with both anti-A and anti-B antibodies, indicating a normal response for blood type AB. Light blue collection tubes commonly contain sodium citrate and are used for coagulation studies. Anticoagulants like lithium heparin and EDTA prevent clotting and are used for various plasma tests.
Step-by-step explanation:
Understanding Blood Typing and Laboratory Procedures
When a blood sample is tested for blood type, anti-A and anti-B antibodies are used to determine the presence of corresponding antigens on the red blood cells. In the scenario provided, both samples visibly agglutinated when respective antibodies were added, which is a normal response for someone with blood type AB. This blood type is characterized by the presence of both A and B antigens on the surface of red blood cells. The fact that both anti-A and anti-B antibodies caused agglutination means that both antigens are present, confirming blood type AB.
Regarding the light blue blood collection tube, it typically contains sodium citrate as an anticoagulant and is used primarily for coagulation studies. These tests are managed by the hematology section of the laboratory. The blood samples may be processed to separate plasma from the cells, and this plasma is used to perform tests such as the prothrombin time (PT) and partial thromboplastin time (PTT), which help assess the blood's ability to clot properly.
Other common anticoagulants mentioned in the information provided include lithium heparin and EDTA (ethylenediaminetetraacetic acid), which are used to obtain plasma by preventing the blood from clotting. Heparinized plasma is often used in chemistry tests related to metabolites or drugs, such as lamivudine concentration assessment, while EDTA plasma is frequently utilized in hematology for complete blood counts (CBC) and other blood-related measurements.