Time of onset, and age
A lavender/purple top tube is typically used to draw blood for a hematocrit test. This tube contains the anticoagulant EDTA, which helps prevent the blood from clotting during testing.
hematocrit machine ......
A light blue-top tube containing sodium citrate is typically used for collecting blood samples for coagulation profiles. The sodium citrate helps prevent blood from clotting during the test by chelating calcium.
Capillary Coagulation Test
WBCs and platelets
no. it is merely the ratio of blood volume test.
Request to lie down during blood test.
Hematocrit (HCT) is typically measured as a percentage of the total volume of blood that is occupied by red blood cells. This measurement can be obtained through a simple blood test called a hematocrit test. The normal range for hematocrit levels varies based on age and sex.
The prothrombin time (PT) test measures how long it takes for blood to clot. This test evaluates the coagulation factors involved in the extrinsic pathway.
PT/PTT and INR
HEMATOCRIT
INR is "International normalized ratio": it is a test for blood coagulation.