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