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. The hematocrit or packed cell volume (PCV) is a part of the complete blood count (CBC) and denotes the percent of whole blood that is composed of red blood cells.It is a measure of both the number of RBCs and the size of red blood cells (RBCs).The blood is centrifuged and the cells settle to the bottom of the tube.y RBC is fine too, so was my heamoglobin. Please advise. A. The hematocrit or packed cell volume (PCV) is a part of the complete blood count (CBC) and denotes the percent of whole blood that is composed of red blood cells. It is a measure of both the number of RBCs and the size of red blood cells (RBCs).