D-Dimer Test

D-Dimer Test

Introduction The D-dimer test is a rapid and widely used diagnostic tool primarily for its high negative predictive value, meaning a normal D-dimer level can effectively rule out acute thrombotic events like deep vein thrombosis (DVT) and pulmonary embolism (PE) in...
Lymphopenia or Low Lymphocytes

Lymphopenia or Low Lymphocytes

Key Takeaways Lymphopenia is an abnormally low lymphocyte count in the blood, defined in adults as an absolute lymphocyte count below 1.0 x 10⁹/L (1,000 cells/µL). Thresholds are higher in children and depend on age. Lymphocytes ▾: Lymphocytes (B...
Monocytosis (High Monocytes)

Monocytosis (High Monocytes)

Key Takeaways Monocytosis means a high monocyte count in the blood, usually an absolute monocyte count (AMC) above 0.8–1.0 × 10⁹/L. It is a clue to an underlying problem, not a disease in itself. Causes ▾: Broadly categorized into infections...
Lymphocytosis (High Lymphocytes)

Lymphocytosis (High Lymphocytes)

Key Takeaways Lymphocytosis or High lymphocytes is an elevated absolute lymphocyte count (ALC) in the peripheral blood, typically above 4.0 x 109/L in adults. Lymphocyte Types ▾: Lymphocytes (B cells, T cells, NK cells) are crucial immune cells involved in...
Causes of Menorrhagia

Causes of Menorrhagia

Key Takeaways Menorrhagia is excessive/prolonged menstrual bleeding, significantly impacting life and often signaling underlying issues. Causes ▾: Primarily due to gynecological issues (fibroids, polyps) or, crucially from a hematology view, bleeding disorders...
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