Decreased osmotic fragility is seen in -
<p>In thalassemia,osmotic fragility characteristically reveals increased resistance to saline hemolysis that is decreased osmotic fragility.</p><p>Reference :Harsh mohan textbook of pathology sixth edition pg no 324.</p>
Hereditary spherocytosis
Sickle cell ds
Autoimmune hemolytic anemia
Thalassemia
Haematology