Relationship between Red Cell Volume and Plasma Volume
| Red Cell Volume | Plasma Volume | Cause | Effect |
| Normal | High | Pregnancy Cirrhosis Nephritis Congestive cardiac failure Dehydration Edema Prolonged bed rest |
Pseudo-anemia |
| Normal | Low | Stress Peripheral circulatory failure Dehydration Edema Prolonged bed rest |
Pseudo-polycythemia |
| Low | Normal | Anemia | Degree of anemia |
| Low | High | Anemia | Less severe anemia |
| Low | Low | HemorrhageSevere anemia | More severe anemia |
| High | Normal to low | Polycythemia | Polycythemia |
| High | High | Polycythemia | More severe polycythemia |
| Normal or even high | High | Marked Splenomegaly | Pseudo-anemia |
