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Understand Cholesterol Testing

September is National Cholesterol Education Month. Learn more about cholesterol and other lipids, and when testing may be appropriate.

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In-depth Feature Articles

To learn more about laboratory medicine in general and gain a greater understanding of how laboratory testing can impact your health care, read the following in-depth articles. These patient resources are intended to help you navigate the testing process, provide context for the lab tests you may need or have already completed, and give you a better understanding of your test results.

Laboratory-developed Tests (LDTs)

In this article, you can learn about laboratory-developed tests, also called "LDTs", that are developed, evaluated, and validated within one particular laboratory. They are not distributed or sold to any other labs or healthcare facilities to perform on their own. Often, a lab will choose to develop and use an LDT because a commercial test is not currently available.

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Lab Oversight: A Building Block of Trust

High standards of quality for clinical laboratories are maintained by federal and state government, laboratory professional organizations, and individual laboratories themselves.

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Commercial Laboratory Tests and FDA Approval

The majority of laboratory tests in use today are commercial lab tests, those that are are manufactured, marketed, and sold in volume as kits to multiple laboratories and other healthcare facilities. In this article, you can learn how the U.S. Food and Drug Administration (FDA) regulates the development and marketing of the commercial tests used in medical care.

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Biotin Affects Some Blood Test Results

Did You Know? Excess biotin in the blood from supplements can cause some, but not all, lab test results to be either falsely increased or falsely decreased, causing healthcare practitioners to misdiagnose and mistreat their patients. Find out what supplements contain biotin, about common tests affected by biotin and how health care professionals can prepare you for testing […]

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The World of Forensic Laboratory Testing

Forensic testing is the gathering of data for analysis and for use in legal proceedings, depending on the laws of particular jurisdictions. Learn how forensic testing differs from clinical laboratory testing, including the special training required for lab personnel and unique procedures employed.

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Tips on Blood Testing

Many routine diagnostic tests require a blood sample. Common as it is, this brief procedure is the thing that causes the greatest apprehension among people getting lab tests performed. This article contains tips on making your blood tests more comfortable and less stressful.

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Ask a Laboratory Scientist

Ask A Laboratory Scientist

This form enables patients to ask specific questions about lab tests. Your questions will be answered by a laboratory scientist as part of a voluntary service provided by one of our partners, American Society for Clinical Laboratory Science. Please allow 2-3 business days for an email response from one of the volunteers on the Consumer Information Response Team.

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