Module 6: Infectious mononucleosis lab findings

Question 1

WBC count

Answer 1

Usually increased up to 20 but may be normal or decreased

Question 2

WBC diff

Answer 2

20-97% reactive lymphs, usually and absolute lymphocytosis

Question 3

Erythrocytes

Answer 3

Normal

Rare cases: spherocytes

Question 4

Platelets

Answer 4

mild thrombocytopenia in half of cases

Question 5

Chemistry

Answer 5

Slight increased in bilirubin and liver enzymes (due to mild hepatitis caused EBV

Question 6

Serological

Answer 6

Positive slide test for EBV antibody (Monotest)

Question 7

What is infectious mononucleosis

Answer 7

common acute viral disease with fever, swollen lymph nodes, absolute reactive lymphocytosis and positive slide test (increased titre of EBV virus antibody)

Question 8

etiologic agent of infectious mononucleosis

Answer 8

Epstein Barr virus (EBV)