Direct emissions are produced from residential and commercial activities in a variety of ways: 1  Combustion of natural gas and petroleum products for heating and cooking needs emits carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O).
Of red blood cell number. Classically this was the packed cell volume. blood was placed in a microtube and spun in a centrifuge. The rbcs settle to the bottom and one measures the height in the tube and reported as a percentage. Now determined by an automated machine. A typical hct is about 3 x the hemoglobin (hgb).
A blood volume test (also called a plasma volume test or a red cell mass test) is a nuclear lab procedure used to measure the volume (amount) of blood in the body.The test also measures the volume of plasma and of red cells in the blood. blood volume test (also called a plasma volume test or a red cell mass test) is a nuclear lab procedure used to measure the volume (amount) of blood in the body.