Widmanns clinical interpretation of laboratory tests. Teaching medical students basic principles of laboratory medicine. Welcome to the interpreting lab, medical and clinical tests section of the website for physicians and pharmacists. Using laboratory values can be a key piece of assessment to determine what is occurring within the body of a patient. Prozone phenomenon and biological false positive bfp reaction are two shortcomings of this test. Should not draw lab test if nothing is going to be acted upon. While hcg is a dependable marker of pregnancy, it cannot be identified till after implantation. Free textbooks of medical laboratory technology in pdf download. Suspicion leads the clinician to believe there is a medical problem infectious diseases cbcdifferential. Features of wallachs interpretation of diagnostic tests 9th edition pdf heres a quick overview of the important features of this book. That way, you can discuss any unusual results facetoface. Juretschke, phd, rncnpt, apnnnpbc, ccns founderpresident, nicu solutions, inc.
Patients who want to can still get their test results from their health practitioners and patients should still look to them as the ultimate informed partner for understanding test results and. Laboratory tests check a sample of your blood, urine, or body tissues. In nsw all mycobacteria recovered from clinical samples are forwarded to the nsw mycobacterium reference laboratory mrl at. 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. Academy of acute care physical therapy apta task force on. Neonatal nurse practitioner the ronald mcdonald childrens hospital at loyola university medical center objectives at. Free textbooks of medical laboratory technology in pdf download by idowu olabode. Interpretation regional medical lab test directory. Give them your preference for contact email or text message. Feb 06, 2020 medical laboratory tests involve analyzing samples of blood, urine andor other body fluids or tissues in order to better understand a persons health state. With the advancement of medical technology, lab tests have become more specific, accurate and often, more complicated. The site is produced by aacc, a global scientific and medical professional.
To aid diagnosis to monitor progress to determine correct dosage 2. This section features links to clinical practice resources on lab, medical and clinical tests such as hba1c, spirometry, tfts thyroid function tests, lfts liver function tests and. A practical guide to interpreting blood test results dr graham basten. All thats needed is a cell phone number or email for notification that results are completed. The following chart gives the normal values for each type of wbc. 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. Clinlabnavigator provides a comprehensive resource for healthcare professionals with more than 700 laboratory test interpretations, test utilization guidelines and transfusion guidelines. More specific information on interpretation of test results is given under the specific sections for hematology, hemostasis and chemistry. There are numerous laboratory tests that can be done. Clinlab navigator laboratory test interpretations for.
Laboratory tests, interpretation, and use of resources. Rel ati ons hp rmcy altered dose in renal failure, liver failure, e. A public resource on clinical lab testing from the laboratory professionals who do the testing. Clinical examination a comprehensive collection of clinical examination osce guides that include stepbystep images of key steps. Together they perform tests and investigations into all.
A small amount can also normally be detected in the blood. Laboratory tests interpretation nurses learning network. Red blood cell rbc the red blood cells primary function is to carry oxygen from the lungs towards your body tissues and carry. A cbc measures the most common types of cells and elements in your blood, such as red blood cells rbc, white blood cells wbc, and platelets. Appendix d interpretation of common laboratory values.
Medical reference laboratory providing esoteric and genetic testing services, test selection guidance, result interpretation references, and continuing education for clients worldwide. Advising clinicians on laboratory test selection and. Urinalysis helps to find certain illnesses, for example kidney disease, liver disease and diabetes. Patient education on blood, urine, and other lab tests lab. This section features links to clinical practice resources on lab, medical and clinical tests such as hba1c, spirometry, tfts thyroid function tests, lfts liver function tests and abgs arterial blood gases. This course will take a closer look at these components. It is usually performed as a part of a multiphase automated testing process. Hypoglycemia, liver disease, adrenal insufficiency, excess insulin. Clinical examination a comprehensive collection of clinical examination osce guides that include stepbystep images of key steps, video demonstrations and pdf mark schemes. Reading this book will equip you with sound understanding and medical judgment that will surprise you. As emerging research regarding early mobilization and advancements in medical practice is evolving, the academy of acute care physical therapy american physical therapy association task force on lab values took on the mission of updating the laboratory values interpretation resource to better accommodate practitioners needs. Case study my doctor just told me i have stage 2 kidney disease.
Schilling test oral administration of radioactive cobalaminlabeled vitamin b12 8. Detailed listing and description of routine and esoteric tests listed alphabetically, with information on when to order and how to interpret the test results based on evidencebased laboratory medicine. In the case of a testservice performed on a stored specimen, if the specimen was stored less than or equal to 30 calendar days from the date it was collected, the date of service of the testservice must be the date the testservice was performed only if. Widmanns bridges the relevant physiology and pathophysiology over to the clinical tests.
The cytochrome are iron containing hemoproteins that act as the last link in the chain of aerobic respiration by transferring electrons to oxygen with the formation of water. Jan 11, 2020 laboratory diagnosis of enteric fever includes blood culture, stool culture and serological test. Interpretation of the results of the differential must always be done with the total number of wbcs in mind. The overuse of laboratory testing has become a serious risk to the sustainability of the canadian health care system, with estimates suggesting that 10% to 50% of laboratory testing might be unnecessary.
Laboratory tests interpretation by nurses reasearch publication continuing education 2001 all rights reserved. Meaning and interpretation of medical tests angiemedia. Clinical chemistrythis section of the lab performs analyses on whole blood, serum, plasma, urine, and other biological specimens like cerebrospinal fluid, am. This test was developed by georges ferdinand widal in 1896 and helps to detect presence of salmonella antibodies in a patients serum. Patient education on blood, urine, and other lab tests. Psa is a molecule found in the prostate gland of all men. Your doctor may also compare your results to results from. These chapters start with a general introduction of the test or disease being detected, followed by the test principle, reagents required for the test, procedures and steps to perform the test, and, finally, result interpretation.
In the latter case, to make use of the test result a reference area for the analysis in question must be. How to read and understand medical laboratory results. The most common tests include chemistry panels, hematology such as the complete blood count, and blood gases. Lab values for this course are taken from the rush medical laboratory rush university medical center, 2012. The urea measures the amount of urea nitrogen in the blood. Some lab tests provide precise information about specific health issues, whereas others provide more general information. A collection of data interpretation guides to help you learn how to interpret laboratory and radiology investigations, including abgs, ecgs, cxrs and axrs.
The ability to read and understand a wide range of laboratory test results is a crucial part of being a doctor. Lab test are integral to patient care and depend on cooperation and support of ward staff for accurate and timely interpretation of the results. Wallachs interpretation of diagnostic tests 9th edition. This book should be of help to nursing in understanding some of the more common tests which are conducted. Advising clinicians on laboratory test selection and results. Packed cell volume % of whole blood volume that is rbc. Interpretation of clinical laboratory tests date dka. The interpretation of clinical laboratory test results michael schaer, dvm, diplomate acvim, acvecc university of florida, college of veterinary medicine with the advent of modern medical technology, the availability of hematological and serum biochemical data to the veterinary practitioner has become commonplace.
Interpretation of a laboratory result requires that the result can be related to a relevant reference value. Widmanns isnt just page after page of lab tests with normal and abnormal valuesi recommend wallachs for that. Pdf the laboratory is an important part of medical diagnostic procedure, adding its. The lab tests online site is sponsored by many major medical labs and is noncommercial and education in nature. If you do not have a physician, you can receive help finding one by calling the st. Rbcs contain hemoglobin, which carries oxygen to all your cells, whereas wbcs are part of your immune system and help to. Pdf interpretation of widal test a short presentation. One of the most common blood test analyzed in a medical lab is a complete blood count cbc. Laboratory tests interpretation by nurses reasearch publication continuing education 2001. Urine test urine analysis, urinalysis, ua is an important screening and diagnostic tool. Its a good idea to schedule a doctors appointment after undergoing lab work. Differential cell count also known as diff or differential laboratory test that counts actual numbers of different types of wbcs. Liver damage, hemolysis, billary obstruction alkaline phosphatase normally 25normally 25160 iul160 iul. It is based on underlying concepts that govern the proper use and interpretation.
Most often, test results provide information that along with the patients history and other medical information helps the physician work with the patient so they can decide what might be the appropriate actions for additional testing or treatment. Lab values and their meanings forward the laboratory services are very pleased to see this report. Interpretation of laboratory tests university of washington. 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. Body stores only last 4 months therefore deficiency develops earlier in. Venereal disease research laboratory vdrl test is a nontreponemal test, used for screening of syphilis due to its simplicity, sensitivity and low cost. A technician or your doctor analyzes the test samples to see if your results fall within the normal range. This can be the same patients earlier results, if this is possible, or be done by comparing to data from a normal population. The results are false negatives if the test is performed during the early stages of pregnancy.
The following indicate the results of screening test q. My doctor just told me i have stage 3 kidney disease. Vdrl test and its interpretation pubmed central pmc. Mar 23, 2020 laboratory tests check a sample of your blood, urine, or body tissues. Let the receptionist know you would like to access your test results. Both test principles and result interpretation segments include illustrations to. A pregnancy test is used to confirm that woman is pregnant or not. Markers used in this test are found in urine and blood which highlights pregnancy, and pregnancy tests need one of these substances. Enter your lab test results and and get the result right. Free interpretation of the complete blood count cbc with differential, urinalysis ua and other lab tests.
The site is probably overall easier to use and understand. Quantitative estimation of vdrl is essential in treatment evaluation. Laboratory tests in general practice good clinical practice gcp. This can be useful in case you switch doctors, need to show them to a specialist, or just want to look at them again later. Widal test is a common agglutination test employed in the serological diagnosis of enteric fever. A collection of guides to interpreting various laboratory tests, including liver function tests lfts, thyroid function tests tfts and more. Includes differential diagnoses, stepbystep approaches, and algorithms, all designed to answer your lab test questions in a flash. This concise, organized guide fits easily in a coat pocket, providing you with the tools necessary to tackle even the most challenging lab tests. Remember that there is some variation in ranges based on the laboratory, so be aware of the normal ranges for your facility. Lab tests online and other credible sources of health information online can assist you in achieving a better understanding of your medical information. Laboratory diagnosis of enteric fever includes blood culture, stool culture and serological test.
Jan 11, 2018 complete blood count is one of the most basic laboratory examinations to assess the overall health status of a patient. Free textbooks of medical laboratory technology in pdf. Academy of acute care physical therapy apta task force. The purpose of this section is to outline the main methods of laboratory tuberculosis tb confirmation available to clinicians in new south wales nsw. Laboratory medicine is a distinct medical discipline and a tool for patient care that is used in all specialties. It has been known for centuries that abnormalities in urine may indicate disease. Perhaps, one of the earliest known record of urine test was the technique of pouring urine on the ground and observing whether or not it attracted insects. Each laboratory test captured in this 2017 version has a brief explanation of the test or laboratory panel, reference values. In addition, a financial analysis was made for each indication. Laboratory values and interpretation a nurses ultimate. The basic physiology underlying each test is described along with an explanation of how the pathology of a disease affects laboratory values. The tests use a range because what is normal differs from person to person.