Method of evaluating a hemocrit

A method of evaluating a patient's hematocrit comprising:

• collecting a sample of blood in a capillary tube;
• placing the capillary tube into a centrifuge having a rotor, the centrifuge having a base and a lid pivotally coupled to the base and movable between a closed and an open position, the lid defining a space, the centrifuge further having a power source disposed within the base and configured to generate electrical power from a renewable power source and at least one battery electrically coupled to the power source, the centrifuge further having a motor disposed within the base and electrically coupled to the at least one battery, wherein the rotor is disposed within the space and removably coupled to the motor when the lid is in the open position, the rotor having a bottom end coupled to the motor, the rotor having a generally cylindrical body and a pair of opposing openings on a top surface opposite the motor, and a pair of holders each disposed in one of the pair of opposing openings, each of the pair of holders having an opening on a first end sized to receive the capillary tube, wherein each of the pair of holders extends from the top surface through a side of the cylindrical body, a second end of each of the pair of holders being spaced apart from the side and being vertically disposed above the bottom end, wherein at least a portion of each of the pair of holders extends directly into the space;
• separating the sample of blood with the centrifuge into a red blood cell portion and a plasma portion;
• displaying on a graphical screen of an electronic diagnosis device a first image, image having a first size and scale, the first image comprising:
• a base line indicia;
• a lower normal line indicia having a first starting point spaced apart from the base line indicia, the lower normal line indicia extending on a first angle relative to the base line indicia;
• an upper normal line indicia having a second starting point coincident with the first starting point, the upper normal line indicia extending on a second angle relative to the lower normal line indicia;
• a 100% level line indicia having a third starting point spaced apart from the first starting point, the 100% level line indicia extending on a third angle relative to the upper normal line indicia;
• and
• determining a patients hematocrit based on the separated blood sample and the first image;
• wherein the base line indicia, the lower normal line indicia, the upper normal line indicia, and the 100% level line indicia are selected and displayed based on demographic information of the patient.