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Is a CT Scan an X-Ray? How They Actually Differ
CT scans do use X-rays, but they work very differently. Here’s what sets them apart in terms of detail, radiation dose, and when doctors use each.
What Is a Heart Monitor Called? EKG, Holter & More
From EKGs to Holter monitors and implantable recorders, learn about the different types of heart monitors and what each one is used for.
How Do Doctors Test for Gout: Blood, Fluid & Imaging
Doctors diagnose gout using joint fluid analysis, blood tests, and imaging. Learn how each test works and why combining them leads to the most accurate diagnosis.
What Does Blood Type O Mean for Your Health?
Type O blood affects clotting risk and emergency medicine, but the blood type diet doesn’t hold up. Here’s what the science actually says.
How to Test for Long COVID When No Single Test Exists
Long COVID has no single diagnostic test, but doctors use a combination of blood work, autonomic, and cognitive tests to piece together a diagnosis.
How to Place 12-Lead ECG Electrodes Step by Step
A practical guide to placing 12-lead ECG electrodes correctly, including chest and limb leads, tips for women and children, and how to spot misplacement.
What Does a Hemoglobin Test Measure?
A hemoglobin test measures the protein in red blood cells that carries oxygen. Learn what your results mean and why doctors use it to check for anemia.
How Is an Endometrial Biopsy Done: What to Expect
Learn what an endometrial biopsy involves, how much it hurts, and what to expect from prep through recovery and results.
What Is a Normal Hemoglobin Range by Age and Sex?
Hemoglobin ranges differ by age, sex, and life stage. Learn what counts as normal, what shifts the numbers, and when low levels need medical attention.
How to Listen to Heart Sounds and Identify Murmurs
Learn how to use a stethoscope to hear heart sounds, find the right listening spots, and recognize what murmurs actually sound like.
How to Get a 3D Ultrasound: Timing, Cost & Tips
Thinking about a 3D ultrasound? Learn the best time to book, what to expect, how much it costs, and how to find a safe provider.
How Accurate Are Blood Pregnancy Tests? Over 99%
Blood pregnancy tests are over 99% accurate, but a few factors can affect results. Learn how they work, what can skew them, and when your doctor might recommend one.
How to Test for Cerebral Palsy: Scans and Screenings
Cerebral palsy is diagnosed through a combination of movement assessments, brain scans, and screenings that can identify signs in infants as young as a few months old.
How Do They Check for Gallstones: Tests Explained
From ultrasounds to ERCP, here’s how doctors detect gallstones and what each test actually looks for.