Haematology - RBC Parameters

Question 1

General

Answer 1

Assessed by blood sample (venous/finger prick/heel prick), counted by enumerating electronic impulses generated when cells flow between light source and sensor when cells flow through electrical field (WBC/RBC/platelet count), spectrometer by converting Hb to stable form and measuring light absorption at specific wavelength, Hb was initially measured by centrifuging blood sample (Hct initially called pack cell volume (PCV))

Question 2

Polycythaemia

Answer 2

Too many RBCs, Hb+RBC+Hct increased

Question 3

Anemia

Answer 3

Hb, RBC, Hct/PCV

Question 4

Mean cell volume

Answer 4

Determined indirectly by light scattering/interruption of electrical field