Understanding And Evaluating Common Laboratory Tests Pdf

understanding and evaluating common laboratory tests pdf

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Reference ranges for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry" , the area of pathology that is generally concerned with analysis of bodily fluids. Blood test results should always be interpreted using the reference range provided by the laboratory that performed the test.

Reference ranges for blood tests

It measures the types and numbers of cells in the blood, including red and white blood cells and platelets. This test is used to determine general health status, screen for disorders and evaluate nutritional status. It can help evaluate symptoms such as weakness, fatigue and bruising, and can help diagnose conditions such as anemia, leukemia, malaria and infection. This coagulation test measures the presence and activity of five different blood clotting factors. This test can screen for bleeding abnormalities, and may also be used to monitor medication treatments that prevent the formation of blood clots.

Most older adults have been through this. Last but not least, blood testing is usually — although not always — very helpful when it comes to evaluating many common complaints that affect aging adults. Fatigued and experiencing low energy? We should perhaps check for anemia and thyroid problems, among other things. Confused and delirious? Blood tests can also provide us with information related to infection, kidney function, and much more. Like much of medical care, blood testing is probably overused.

Common Lab Tests

L icensed Practical Nurses LPNs are responsible for providing safe, competent and quality care to clients. It is an expectation of practice that they will critically appraise all assessment data to arrive at the best nursing care for each individual client. This course provides information and learning activities related to diagnostic tests and laboratory lab values, one source of client assessment data. The LPN should understand the rationale for conducting specific diagnostic and laboratory tests when delivering care, as well as the implications of the results of those tests. The course lists common diagnostic and lab tests and values in an organized manner, with opportunities for participants to test their knowledge through short case studies and interactive quizzes. Entry level LPNs are expected to meet the knowledge requirement for obtaining, assessing and monitoring diagnostic tests and lab values commonly used in healthcare.

Clinical laboratory test results are a very important parameter in diagnosis, monitoring and screening. Thus a lot of data are provided and it is therefore imperative for patient care and safety that the clinicians are familiar with the tests and with interpretation of the results. The laboratory result must be interpreted on the background of a reference interval that is used to distinguish between "health" and "disease". The clinician must also evaluate the result from the knowledge of biological variation and be aware of the potential risk of false interpretation. Likewise, influence of random errors and systematic errors on the result is of importance as well as the diagnostic sensitivity and specificity.

Taking care of your brain health may be easier than you think! Visit Staying Sharp to learn more. Unless you enjoy reading Dictionary of Medical Terms, your routine lab results can seem downright cryptic. To help you decipher them, we asked Mark S. Lachs, M. Bernard, M.

tests. This course was not designed to be a lab manual The nurse must also have basic knowledge of lab tests in order to recognize trends that affect In most common lab tests, venous blood is used. The Possible diagnosis: essential for evaluating laboratory results and selecting appropriate methodology​; (media.

Common Lab Tests

After the sample has been analyzed in the lab and the results compiled, a blood test report will in most cases be supplied to the testee. The report details the various components in the blood and at what level they are present. For those from non-medical backgrounds, the reports provided following blood tests can be complex and difficult to decipher. Blood test results generally use the metric system of measurement and various abbreviations, including: [2].

Many tests of liver biochemistry are called liver tests. These tests measure liver enzymes that are released into the bloodstream eg, release of aminotransferases from injured liver cells or of alkaline phosphatase due to cholestasis or assess liver function by evaluating hepatobiliary excretion eg, bilirubin. The most useful laboratory tests to screen for liver disorders are serum aminotransferases the most commonly used liver tests , bilirubin, and alkaline phosphatase. Certain patterns of biochemical abnormalities help distinguish hepatocellular injury from impaired bile excretion cholestasis—see table Common Patterns of Laboratory Test Abnormalities.

Lab Tests Online is an award-winning health information web resource designed to help patients and caregivers understand the many lab tests that are a vital part of medical care. Thanks for providing a knowledgeable, understandable resource for patients to receive information about lab testing. Two new tests combine the powerful technologies of liquid biopsy and next-generation sequencing to help guide targeted cancer therapy. Continue Reading. Not enough evidence shows whether screening for and treatment of asymptomatic low vitamin D levels improves health outcomes.

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Your Lab Results Decoded