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 (Low Lymphocytes)

Lymphopenia (Low Lymphocytes)

TL;DR Lymphopenia is defined as abnormally low lymphocytes in the blood (e.g., <1.0 x 109/L in adults). Lymphocytes ▾: Crucial immune cells (T cells, B cells, NK cells) providing specific defense against pathogens and abnormal cells. Causes ▾: Decreased Production:...
Monocytosis (High Monocytes)

Monocytosis (High Monocytes)

TL;DR Monocytosis or high monocytes is an increased absolute monocyte count in peripheral blood, typically > 0.8−1.0 x 109/L. It’s a non-specific indicator of an underlying condition, not a disease itself. Causes ▾: Broadly categorized into infections...
Lymphocytosis (High Lymphocytes)

Lymphocytosis (High Lymphocytes)

TL;DR Lymphocytosis (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 adaptive and innate...
Causes of Menorrhagia

Causes of Menorrhagia

TL;DR 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 (e.g., von...