The table below shows some very selective laboratory findings that are commonly tested in the exam:
| Test | Interpretation |
|---|---|
| Haptoglobin | |
| (Remember haptoglobin binds to free haemoglobin) | Decrease |
| • intravascular haemolysis | |
| MCHC | Increased |
| • hereditary spherocytosis | |
| • autoimmune haemolytic anemia* |
Decreased • microcytic anaemia (e.g. iron deficiency) |