Aphl hcv test result interpretation guide 1 laboratory markers of hcv infection currently available hepatitis c virus hcv antibody tests have a window period from exposure to hcv to detection of antibody of approximately 811 weeks. Evolution of the 2017 edition of the laboratory values interpretation. Interpretation of laboratory tests for canine cushings syndrome. Interpretation of laboratory results acute care testing. A secondary aim of the study was to identify potential countermeasures to address these challenges. Knowing the different normal lab values is an important step in making an informed clinical decision as a nurse. Diagnostic and laboratory tests are tools that provide invaluable insights and information about the patient. Blood test results can mean many different things and are often analyzed by healthcare providers in the context of other important factors, such as symptoms fever. How many patients have coronary artery disease and have a stent placed. Using laboratory values can be a key piece of assessment to determine what is occurring within the body of a patient. When in doubt about a lab test or diagnostic procedure, consult your laboratory procedure manual or contact the lab or the department responsible for the test. Urinalysis helps to find certain illnesses, for example kidney disease, liver disease and diabetes. Pdf laboratory test result interpretation for primary. Confirm varicella in severe cases hospitalizations or deaths or unusual cases.
Sarscov2 covid19 qualitative pcr uw laboratory test. Jan 14, 2020 the venereal disease research laboratory vdrl test is a nontreponemal microflocculation test which is used for screening of syphilis. Lab values and their meanings forward the laboratory services are very pleased to see this report. Primary care physicians challenges in ordering clinical. Lab tests are used to help confirm a diagnosis, monitor an illness, and the patients response to treatment. Pretest expectations, test interpretation and management.
Liver damage, hemolysis, billary obstruction alkaline phosphatase normally 25normally 25160 iul160 iul. Laboratory tests, interpretation, and use of resources. Academy of acute care physical therapy apta task force on. Director clinical and forensic toxicology laboratory, mayo clinic. Interpretation of laboratory tests university of washington. Interpretation of laboratory tests for canine cushings. Knowledge and correct interpretation of possible druglaboratory test interactions dltis is important for physicians, pharmacists and laboratory specialists. For example, one lab might have different ranges for normal and abnormal than another. Utilize clinical laboratory data to monitor various disease states. Physicians reported ordering diagnostic laboratory tests for an average of 31. A nonsymptomatic cold virus can raise or lower white blood cell count. This study investigated how confident interns were with requesting biochemical tests and interpreting the results.
Introduction using laboratory values can be a key piece of assessment to determine what is occurring within the body of a patient. Nov 27, 2018 intake of drugs may influence the interpretation of laboratory test results. Laboratory results may be affected by analytical or physiological effects of medication. Pathology providers should comply with the australiannew zealand standard 2243. Laboratory test results may influence up to 70 percent of medical decision making. Laboratory test result interpretation for primary care doctors. Abnormal test results are fairly common, especially among older adults. Advantages and disadvantages of different types of hiv tests. Laboratory test result interpretation for primary care. Interpret the clinical significance of abnormal laboratory values. An introduction to interpretation of commonly ordered laboratory results. Clinical signs of cushings syndrome are presented in table 1 in order of frequency.
Red blood cell rbc the red blood cells primary function is to carry oxygen from the lungs towards your body tissues and carry. Advising clinicians on laboratory test selection and results. Laboratory services play an integral role in the healthcare system from primary through to tertiarylevel care since diagnostic tests can. Pretest expectations, test interpretation and management decisions in routine general practice thesis paul houben 07062010. Depending on the test and the methods used, testing can be performed at a centralized laboratory, the hospital bedside, the physicians office, the clinic, the workplace, and even the home. Fiftyplus folks tend to take more medications, says lachs, and that can throw off test results. Interpretation of clinical laboratory tests date serum liquid component disolved components, drugs, electrolytes, gases, etc. This test is used to identify hepatocellular diseases of the liver. Add 1 drop of test sample 25l into each reaction circle labeled as o, h, ah, bh according to given antigen solution. Each laboratory test captured in this 2017 version has a brief explanation of the test or laboratory panel, reference values. For example, diuretics can alter sodium and potassium levels.
Additional information regarding related laboratory test results i. A practical guide to interpreting blood test results dr graham basten. Widmanns clinical interpretation of laboratory tests. Nucleic acid amplification tests nat can detect hcv rna approximately 12 weeks after exposure. It detects the igm and igg antibodies to lipoidal material released from the damaged host cells, as well as to lipoproteinlike material and possibly cardiolipin released from the treponemes. Differential cell count also known as diff or differential laboratory test that counts actual numbers of different types of wbcs. See section 6 for more detail about specific analytes. Determine if suspected vaccinerelated adverse events were caused by vaccinestrain vzv. At the end of this program, each participant will be able to. Your doctor may want you to do the test again or have. This course will take a closer look at these components. Running or any highintensity exercise can cause slight dehydration and show up as kidney insufficiency. Because pathologists do not get paid for this activity and most do not have the content knowledge to be effective in advising fellow doctors about clinical laboratory test selection and result interpretation. Union cottage, depot campus, mansfield interpretation of soil test results.
Advising clinicians on laboratory test selection and. The program was run as a series of identical 4hour small group sessions to facilitate discussion and laboratory tours. Recognize normal ranges for common laboratory values in adults. More specific information on interpretation of test results is given under the specific sections for hematology, hemostasis and chemistry. Unfortunately, studies to date are inconclusive on which soil nutrients or. Laboratory analyses have a level of uncertainty based on test methods used and lab proficiency. Is the interpretation for coagulation testing rarely needed. It can help diagnose infections, autoimmune disorders, anemia, and other blood diseases. The tests in a clinical chemistry laboratory measure concentrations of biologically important ions salts and minerals, small organic molecules and large macromolecules primarily proteins. Laboratory values and interpretation a nurses ultimate. Academy of acute care physical therapy apta task force. The most sensitive method for confirming a diagnosis of varicella is the use of polymerase chain reaction pcr to detect vzv in skin.
Clinical chemistry is the branch of laboratory medicine that focuses primarily on molecules. It can be hard to compare results from different labs because they may approach the test differently. Patient education on blood, urine, and other lab tests lab. The purpose of this course is to introduce the student to laboratory tests that are commonly ordered by physician. There are numerous laboratory tests that can be done. Impact of interactions between drugs and laboratory test. Mar 23, 2020 laboratory tests check a sample of your blood, urine, or body tissues. Jan 11, 2020 however, a slide widal test is more popular among diagnostic laboratories as it gives rapid results. Use of the determine hiv 12 agab combo test with serum or plasma in the laboratory algorithm for hiv diagnosis.
Common laboratory tests for intact rocks include measu rements of strength point load index, compressive strength, brazilian test, direct shear, stiffness ultrasonics, elastic modulus, and durability slaking, abrasion. Identify common causes for abnormal laboratory values. A sunburn can elevate white blood cell count, which typically signals inflammation. No part of this material may be reprinted, reproduced, transmitted, stored in a retrieval system, or otherwise utilized, in any form or by any means electronic or mechanical, including photocopying or. The most common tests include chemistry panels, hematology such as the complete blood count, and blood gases. The following information provides an overview of the interpretation of clinicopathological abnormalities as they apply to various clinical situations. Assessment of liver function and diagnostic studies. Results of clinical pathologic tests should always be interpreted with respect to what is known about the patient signalment, history, clinical signs, results of other diagnostic. Testing is limited to the high complexity clia clinical laboratory at uw virology in seattle, wa.
Proposed solutions to improve the accuracy, efficiency, and safety of ordering clinical laboratory tests and interpreting the results include clinical decision support tools, trending of test results in electronic medical records emrs, 2 conditionspecific algorithms to help select tests, 3 professional practice guidelines, 4 and reflex. Test results can be used to aid the patient, physician, and caregiver in reaching decisions. Interpretation of a laboratory result actually starts with the clinician requesting the right test for the clinical problem heshe is facing. The tests use a range because what is normal differs from person to person. In such cases the patients own previous results are a useful baseline.
Interpretation of a laboratory result requires that the result can be related to a relevant reference value. Knowledge and correct interpretation of possible drug laboratory test interactions dltis is important for physicians, pharmacists and laboratory specialists. The expectation is that the result will provide information that will support decision on the subsequent treatment. The following chart gives the normal values for each type of wbc. Your doctor may also compare your results to results from. Laboratory tests check a sample of your blood, urine, or body tissues. This includes the name of the test, its clinical significance, and the correlation of results with disease states. Consistent with recent or prior syphilis infection. Official revised 8172018 course syllabus hprs 1209 interpretation of laboratory results catalog description.
A technician or your doctor analyzes the test samples to see if your results fall within the normal range. Laboratory testing and interpretation of rock properties. Course syllabus hprs 1209 interpretation of laboratory results. Lab test are integral to patient care and depend on cooperation and support of ward staff for accurate and timely interpretation of the results. Interpretation of results main competency to be acquired. Chickenpox interpreting laboratory tests varicella cdc. Interpretation of soil test reports for agriculture. Introduction a variety of laboratory tests are done in the neonatal period on a routine basis, many as pointofcare testing. May 14, 2020 knowing the different normal lab values is an important step in making an informed clinical decision as a nurse. Laboratory testing and interpretation of rock properties 2012 instructor. No part of this material may be reprinted, reproduced, transmitted, stored in a retrieval system, or otherwise utilized, in any form or by any means electronic or. Pdf laboratory test result interpretation for primary care.
Interpretation of the results of the differential must always be done with the total number of wbcs in mind. The lpn lab values manual was first compiled in response to a lack of information in the form of. That means the lab doesnt have a clear yes or no answer based on your sample. Widmanns clinical interpretation of laboratory tests clinical interpretation of lab tests. Amplification of both targets results in a presumptive positive detectable test result, while amplification of one of two targets results in an inconclusive result, and amplification of neither target results a negative nondetectable test result. Intake of drugs may influence the interpretation of laboratory test results. Laboratory tests interpretation by nurses reasearch publication continuing education 2001 all rights reserved. They reported uncertainty about ordering tests in 14. List circumstances that may produce falsenegative or falsepositive laboratory results. Patient education on blood, urine, and other lab tests. Table 81 gives a summary list of laboratory rock tests and procedures by astm. Serum, the remaining liquid, which can be used in blood tests to assist in determing how various body organs may be functioning when should we actually draw a blood test.
Laboratory tests interpretation nurses learning network. This book should be of help to nursing in understanding some of the more common tests which are conducted. Explain the significance of commonly ordered laboratory. Course syllabus hprs 1209 interpretation of laboratory. Procedure the laboratory test equipment is shown below in figure 84. The site is produced by aacc, a global scientific and medical professional. In the latter case, to make use of the test result a reference area for the analysis in question must be. However, a slide widal test is more popular among diagnostic laboratories as it gives rapid results. An example of the effect of age, sex and other variables on interpretation of laboratory results is serum alkaline. Bring all reagents to room temperature and mix well.
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