Category: Blood Disorders

Persistent fatigue in rheumatoid arthritis deserves its own evaluation. Inflammation may contribute, but anemia, iron deficiency, thyroid disease, sleep problems, medication effects, and other conditions can overlap. The most useful blood tests are the ones […]

Chronic kidney disease testing uses two complementary measurements: an eGFR test, usually calculated first from serum creatinine, and a urine albumin test, most often reported as the urine albumin-to-creatinine ratio (UACR). The eGFR test estimates […]

Iron testing can guide care for restless legs, but the diagnosis begins with the symptom pattern. An uncomfortable urge to move your legs when you sit down in the evening can be more than a […]

Being eligible to donate does not necessarily mean your iron reserves are fully replenished. You passed the donation center's screening and felt well enough to give blood. Could your iron stores still be low? Yes. […]

When treatment does not seem to help, the next step is to review the response, the treatment plan, and the reason iron was lost. You have been taking iron, but you still feel tired—or your […]

Your estimated glomerular filtration rate, or eGFR, may look similar to your last result, yet your clinician may still want to check potassium, bicarbonate, and blood counts. These tests answer questions about kidney disease that […]

Vitamin B12 deficiency develops when the body does not have enough usable B12 to support normal nerve function and blood-cell production. Autoimmune gastritis is one possible cause: immune damage to the stomach lining can interfere […]

Multiple myeloma blood tests work together to answer different questions. Serum protein electrophoresis (SPEP) looks for an abnormal protein pattern and can measure an M-protein. Serum immunofixation identifies its type. The serum free light chain […]

Hemochromatosis follow-up continues after iron-removal treatment begins—and after ferritin reaches the intended range. The most useful results answer three questions: Are excess iron stores decreasing? Is blood removal being tolerated safely? What ongoing care is […]

Antiphospholipid syndrome tests look for an immune-related pattern that may help explain certain blood clots or pregnancy complications. One positive antibody result does not establish antiphospholipid syndrome (APS). The result becomes meaningful when a healthcare […]

A white blood cell count measures the total number of white blood cells in a blood sample. A high result is called leukocytosis; a low result is called leukopenia. Neither result names a cause by […]

Heart failure blood tests help answer different parts of the diagnostic puzzle. BNP or NT-proBNP can show that the heart is under increased wall stress, while kidney, electrolyte, blood-count, iron, thyroid, glucose, lipid, and liver […]

Originally published May 10, 2026. Updated August 26, 2026. Iron status is not one laboratory number. A serum iron result can change with meals, supplements, time of day, illness, and ordinary biological variation. Ferritin estimates […]

Iron deficiency anemia is not simply a low hemoglobin result, a low serum iron result, or a reason to take an iron supplement indefinitely. The diagnosis contains two connected findings: iron deficiency and anemia. The […]

CBC and anemia blood tests evaluate the number, size, and distribution of blood cells and help organize common anemia and blood-cell patterns.1 A complete blood count with differential and platelets measures red cells, hemoglobin, hematocrit, […]

Rheumatoid arthritis blood tests can add objective information when inflammatory joint symptoms persist, but no blood test can diagnose or exclude rheumatoid arthritis by itself. Clinicians combine the history, joint examination, laboratory findings, and often […]

Does High Ferritin Mean Hereditary Hemochromatosis? Not by itself. Ferritin reflects stored iron, but it also rises with inflammation, infection, metabolic dysfunction-associated steatotic liver disease (MASLD), alcohol-related liver injury, other liver disease, kidney disease, malignancy, […]

A laboratory result usually answers a straightforward question: How much of a substance is present? A biomarker ratio asks a second question: How does that result relate to another part of the same biological system? […]

Emergency department visits for tick bites began rising unusually early in 2026. In April, the Centers for Disease Control and Prevention reported that weekly tick-bite emergency visits were the highest recorded for that time of […]

Managing a chronic condition often involves much more than responding to symptoms. It may require regular medical visits, medication review, lifestyle support, home measurements, and laboratory testing that shows how the body is functioning over […]

The blood type diet claims that people should choose foods according to whether they have type O, A, B, or AB blood. Supporters suggest that blood type may influence digestion, metabolism, inflammation, weight, and the […]

Healthcare providers often measure the neutrophil-to-lymphocyte ratio to assess inflammation. This ratio helps them identify chronic inflammation and evaluate a patient’s immune response. Clinicians consider the neutrophil to lymphocyte ratio (NLR) a useful predictor for […]

Supplements can fill dietary gaps and support specific health goals—but more isn’t always better. Taking doses above the Tolerable Upper Intake Level (UL) or “stacking” multivitamins with single-nutrient products can tip you into vitamin excess, leading to symptoms […]

Introduction Unexplained fatigue. A swollen lump in your neck. Night sweats. These symptoms are easy to write off as a virus, stress, or the flu. But when they persist or worsen over time, they could be […]

Welcome to our in-depth exploration of how red blood cells and white blood cells play crucial roles in detecting infections and immune issues through a Complete Blood Count (CBC). Understanding what type of infections can a CBC detect is […]