Normal laboratory values and perioperative nursing. There are numerous laboratory tests that can be done. Interpretation of clinical laboratory tests profiles. Daily this is what is barely taught in medical school. Medical laboratory tests abbreviations health medicare pdfs. Advising clinicians on laboratory test selection and results interpretation with a diagnostic management team michael laposata, md, phd edward and nancy fody professor of pathology vanderbilt university school of medicine pathologist in chief, vanderbilt university hospital. Anemia can be due to ironb12folate deficiency, blood disorders or other underlying pathology. For the csf and serum igg and albumin data shown in figure 1, the pattern of results is a, n, a, a, where. Here is the list of normal ranges of various medical tests.
Medical laboratory tests analyze samples of your blood, body tissues, urine, or stool. Laboratory tests reference ranges 1,25dihydroxyvitamin d 1,25dihydroxycholecalciferol, serum see vitamin d metabolites 17hydroxyprogesterone, serum female, follicular. Teaching medical students basic principles of laboratory. Lung function parameters vary considerably with age and body size, so that, unlike many laboratory tests, the normal range of expected values must be individualized. Serum, the remaining liquid, which can be used in blood tests to assist. This course will take a closer look at these components. Advising clinicians on laboratory test selection and results. February 2009 j volume 40 number 2 j labmedicine 105. For spirometry, only low values are considered to be abnormal, so the lower limit of normal lln is taken to be equal to the 5th percentile of a healthy, nonsmoking population. Coordinating council on the clinical laboratory workforce. When your body is healthy it functions normally in a state of homeostasis or equilibrium. Diagnostic and laboratory tests are tools that provide invaluable insights and information about the patient.
The study was conducted at a tertiary care academic medical center. Patients taking medication chronically had smaller intervals between laboratory tests. The largest increase was noted for coagulation tests, which rose from 1. Interpretation of clinical laboratory tests missouri alliance for. Clinical laboratory reference values laboratory medicine. Clinical medical laboratories are an example of applied science, as opposed to research laboratories that focus on basic science, such as found in some. Normal values of common laboratory tests daviss drug guide. This cheat sheet identifies the normal adult values for the most common laboratory tests. Use of excel spreadsheets to create interpretive reports for.
Normal values references ranges free medical student revision notes medical assistant graduation cap med school ideas for 2019 normal values references ranges. Most of the values apply to adults and where they differ for children it will be indicated. The lpn lab values manual was first compiled in response to a lack of information in the. In general, the use of laboratory tests is increasing, although some tests were used less. Related entries swiss cheese model paediatric vital signs potassium sodium the anion gap labs help me pass nursing school. Laboratory values are expressed in the units used at. The table revises the most recently published data normal reference laboratory values. Formerly referred to as noninsulindependent diabetes mellitus. Normal laboratory values medical transcription course. Common laboratory tests a decrease in hgb concentration means the patient is anemic. Selection and results interpretation with a diagnostic management team michael laposata, md, phd.
Widmanns clinical interpretation of laboratory tests. Thyroid function tests normal ranges vary thyroid iodine 1i uptake 10% to 30% of administered dose. Normal values of human body fluidsnormal lab values lab. These samples that you provide are tested by a laboratory technician, or maybe. Below is a list of few of the commonly used normal laboratory values. Clinical laboratory reference values laposatas laboratory. We compared two emr interfaces traditional versus novel currently in use at our institution with regards to the accuracy of abnormal value indicators alerts of laboratory findings. The normal values given below are just for knowledge purpose and do not consider as an only truthful source of information as every laboratory have their own reference ranges as per the population they serve.
Lab tests are used to help confirm a diagnosis, monitor an illness, and the patients response to treatment. Online mt course normal laboratory values normal laboratory values. Normal laboratory reference intervals among healthy adults. How should the lower limit of the normal range be defined. Lab test are integral to patient care and depend on cooperation and support of ward staff for accurate and timely interpretation of the results. Each lab contains important clinical information, critical lab values, differential diagnoses and etc. Use of excel spreadsheets to create interpretive reports. It is important to remember that normal laboratory values may vary slightly, depending on the laboratory setting and equipment used in testing. The listed reference ranges should be used when interpreting laboratory values. Treatment is usually specific and the prognosis can range. The results of the test will show if a person is within the normal lab values. Knowing the different normal lab values is an important step in making an informed clinical decision as a nurse.
Lab services unc rex healthcare raleigh, garner, cary. When your body is in homeostasis, the values for fluids, chemicals and secretions hormones are within an acceptable or normal range. These tests are also referred to as in vitro diagnostics or ivds. This table lists reference values for the most common laboratory tests and is intended for interpretation of the results as they are provided in the examinations. Jordan and others published normal reference laboratory values find, read and cite all the research you need on researchgate. A medical laboratory or clinical laboratory is a laboratory where clinical pathology tests are carried out on clinical specimens to obtain information about the health of a patient to aid in diagnosis, treatment, and prevention of disease. The results of many tumor markers and laboratory tests vary according to the laboratory conducting the test. Laboratory values see inside back cover for continuation. Unc rex healthcare operates a fullservice, diagnostic laboratory inside of unc rex hospital along with several offsite laboratories for. Reference values vary based on several factors, including the demographics of the healthy population from which specimens were obtained and the specific methods andor. The following is a table of reference values for adults for laboratory tests commonly ordered at the massachusetts general hospital mgh and recorded in the case records. Page 5 of 43 20202021 laboratory services information manual test order entry inpatients the epic electronic medical record emr system is used to request tests. The following information is intended as a guide to help the registrar locate the test in the medical record and to identify which lab test results should be coded in the cs sitespecific factors.
Normal lab values complete blood count cbc test acronym meaning normal range values male normal range values female wbc number of white blood cells 3. Award winning pocket tool for medical laboratory tests, normal lab values reference packs in all that is needed for quick reference in clinical rounds. The most common tests include chemistry panels, hematology such as the complete blood count, and blood gases. A read back of the critical result is required by the physician or licensed caregiver which should include the patients. Correct interpretation of laboratory tests requires accurate reference intervals from an appropriate population. Clinical laboratory testing is the most widely used medical decisionmaking tool and is crucial for disease screening, diagnosis, monitoring disease progression and treatment efficacy.
Unc rex healthcare operates a fullservice, diagnostic laboratory inside of unc rex hospital along with several offsite laboratories for your convenience. Surgical pathology, cytology and bone marrow examinations are ordered using epic. This allows me to understand the why behind the numbers. Inside, find practical approaches to the interpretation of abnormal lab tests. Lab values and their meanings forward the laboratory services are very pleased to see this report. Lab reference ranges acp internal medicine meeting. Common laboratory values university of rochester medical center. Previously available only as part of the clinicians guide to laboratory medicine package, the new 3rd edition of the clinicians guide to laboratory medicine.
This book should be of help to nursing in understanding some of the more common tests which are conducted. The normal lab values are clearly arranged, alphabetically ordered and. Lab tests, along with a health history and physical exam, are used to diagnose and manage health conditions. Teaching medical students basic principles of laboratory medicine. Reference values intervals for blood, urine, csf, stool, and other fluids eg, gastric acid and commonly used panels are included. These samples that you provide are tested by a laboratory technician, or maybe your doctor, to find out if your results are normal. Download a printerfriendly version of the chart here. The reference values provided in these tables should be used as guidelines only. 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. A urine pregnancy test was administered to all females prior to.
For each patient, available laboratory results and the problem list were sent to two mutually blinded critical care experts, who marked the values about which they would like to be alerted. Pdf reference values for clinical laboratory parameters in. If you are familiar with the normal values, you will be able to determine. A comprehensive guide to normal lab values laboratory tests are procedures wherein a sample of blood, urine, other bodily fluid or tissue are checked in order to know more about a persons health. Polycythemia can result from a large number of causes, including. Normal laboratory values msd manual professional edition. Laboratory data from intensive care unit icu patients consecutively admitted during a twoday period were recorded. Widmanns isnt just page after page of lab tests with normal and abnormal values i recommend wallachs for that.
Apr 08, 2014 clinical laboratory testing is the most widely used medical decisionmaking tool and is crucial for disease screening, diagnosis, monitoring disease progression and treatment efficacy. Lab services during your doctor visit, your physician may decide to order a laboratory test as part of a routine checkup, to confirm a diagnosis or to monitor your health. Diagnostic tests are an important part of medical care. Reference values for laboratory tests normal reference laboratory values nejm clinical lab reference range guide mgh laboratory test reference ranges normal laboratory values haematology reference values clinical laboratory tests normal values laboratory. Over a twoday period we enrolled all patients consecutively admitted to any of four icus medical, surgical, mixed. Correct interpretation of laboratory tests requires accurate reference intervals from an appropriate population 2. Widmanns bridges the relevant physiology and pathophysiology over to the clinical tests. Normal lab values gives both non medical readers and health professionals a fastnavigable and clearly structured overview of the main routine laboratory parameters and possible causes of their increase and decrease. Treatment is usually specific and the prognosis can range from good to grave, depending on the specific cause. Normal lab values common laboratory values meditec.
Lab values for this course are taken from the rush medical laboratory rush university medical center, 2012. Advising clinicians on laboratory test selection and. Jan 01, 2009 based on the data for csf and serum igg and albumin values shown above, the excel table below contains logic statements for each of the 4 indices, in the order shown above, that identify the pattern number when the logic statement for a particular pattern number is found to be true, across all possible patterns, because the entries in cells e16, e17, e18, and e19 were, based on the. Customized reference ranges for laboratory values decrease. Laboratory values of clinical importance medical notebook. Reference range values in clinical chemistry reference ranges. And increase in hgb concentration means the patient is polycythemic. Widmanns isnt just page after page of lab tests with normal and abnormal valuesi recommend wallachs for that. Harrisons principles of internal medicine 18th edition. Normal lab values gives both nonmedical readers and health professionals a fastnavigable and clearly structured overview of the main routine laboratory parameters and possible causes of their increase and decrease. Hematology absolute neutrophil count male 17805380l 1. Reference intervals are typically established by assaying specimens from a. To illustrate the complexity of the formulas and the skill required with excel mathematics and boolean logic functions, the formula used to calculate the igg sr and provide the interpretation of the pattern of results for all 4 indices, in the order shown in table 1 is demonstrated below.
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