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  1. www.webmd.com › a-to-z-guides › partial-thromboplastin-timeActivated Partial Thromboplastin Time (APTT) Test & APTT ...

    2023年5月22日 · What Is a Partial Thromboplastin Time Test? Medically Reviewed by Carol DerSarkissian, MD on May 22, 2023. Written by WebMD Editorial Contributors. What Does a PTT Test Look For? Why Would I...

  2. www.webmd.com › vitamins › aiSELENIUM: Overview, Uses, Side Effects, Precautions, ...

    2024年6月23日 · Overview. Selenium is an essential trace mineral found in soil, water, and some foods. It is an important factor in many body processes. Selenium increases antioxidant effects in the body. Crab,...

  3. www.webmd.com › a-to-z-guides › prothrombin-timeProthrombin Time (PT/INR) Blood Test for Clotting Time - WebMD

    2023年5月28日 · What Is a Prothrombin Time Test? Medically Reviewed by Carol DerSarkissian, MD on May 28, 2023. Written by WebMD Editorial Contributors. What Does a PT Test Look For? When Would I Need a PT Test?...

  4. www.webmd.com › a-to-z-guides › parathyroid-hormoneParathyroid Hormone (PTH) Test: High vs Low PTH Levels, ...

    2021年11月12日 · A PTH blood test can help your doctor figure out whether your abnormal calcium levels are caused by your parathyroid glands. If your test shows that your PTH level is appropriate for your calcium...

  5. www.webmd.com › a-to-z-guides › phosphate-blood-testPhosphate Blood Test: Purpose, High vs. Low vs. Normal Levels

    2024年2月20日 · What is a Phosphate Blood Test? Medically Reviewed by Carol DerSarkissian, MD on February 20, 2024. Written by WebMD Editorial Contributors. Why Do I Need a Test? How Should I Prepare for It?...

  6. www.webmd.com › a-to-z-guides › potassium-blood-testPotassium Levels Blood Test: High vs. Low, Normal K Level - WebMD

    2024年2月25日 · What Do My Results Mean? 3 min read. In the right amounts, the mineral potassium helps your nerves and muscles “talk” to each other, moves nutrients into and waste out of your cells, and helps...

  7. www.webmd.com › a-to-z-guides › what-is-red-blood-cell-count-testRed Blood Cell Count Test: Why It Is Performed, Risks, and ...

    2024年4月29日 · A red blood cell count test measures how many red blood cells (RBCs) are in your blood. The red blood cells, or erythrocytes, have hemoglobin – a protein that transports oxygen to all parts of ...