Platelet Count (PC)
Normal Range
1,50,000 – 3, 50,000/cu.mm.
Causes of eosinophilia (> 250/cu.mm. diurnal variation with highest levels in morning)
Allergic diseases (bronchial asthma, hay fever, urticaria, allergic rhinitis);
Parasitic infestations, mycoses, scarlet lever, erythema multiforme systemic lupus erythematous, rheumatoid arthritis, skin diseases (e.g.pemphigus).Causes of monocytosis ( > 10% of differential absolute count > 500/cu.mm.)
Monocytic leukemia, other myeloproliferative disorders, lymphomas, lipid storage diseases, post splenectomy, protozoal and some rickettsial infections, SBE, tuberculosis, brucellosis sarcoidosis, rheumatoid arthritis, systemic lupus erythematosus(SLE).