What Is a Fecal Occult Blood Test (FOBT)?
Mar 29, · Know how all blood tests are formatted and presented. All blood tests, including the CBC and other panels and tests, must include certain basic elements including: your name and health ID, date the test was completed and printed, names of the test(s), lab and doctor who ordered the test, actual test results, normal range for results, flagged abnormal results and, of course, lots of. What is a magnesium blood test? A magnesium blood test measures the amount of magnesium in your blood. Magnesium is a type of electrolyte. Electrolytes are electrically charged minerals that are responsible for many important functions and processes in your body.. Your body needs magnesium to help your muscles, nerves, and heart work properly.
Last Updated: March 29, References. This article was medically reviewed by Mandolin S. Ziadie, MD. There are 10 references cited in this article, which can be found at the bottom of the page. This article has been viewed 85, times. At some point in their lives, almost everybody gets their blood taken by what causes pain in the heel of your foot health professional and has it analyzed in a laboratory.
The most common blood test performed is a complete blood count CBCwhich measures all the different types of cells and formed elements in your blood, such as red blood cells RBCwhite blood cells WBCplatelets and hemoglobin. To best understand your health parameters and not have to completely rely on your resultx interpretations, it's a good idea to learn to read your blood test results. Be sure to return to the doctor for follow-up discussions about test results when necessary. To read blood test results, scan the results and look for anything labeled "L," which means it's too low, or "H," which means it's too high.
If you have a low red blood cell count, it could mean that you have anemia, whereas a high red lwb cell count could indicate bone marrow disease.
If you have a low white blood cell count, it could be because of a bone marrow issue or how to draw graffiti alphabet on paper could be a side effect of medications. A high white blood cell count could mean that your body is fighting an infection.
To learn how to interpret other elements that are on blood test results, scroll down! Did this summary help you? Yes No. Log in Social login does not work in incognito and private browsers.
Part 1 of Know how all blood tests are formatted and presented. All blood tests, including the CBC and other panels and tests, must include resd basic elements including: your name and health ID, date the test was completed and printed, names of the test slab and doctor who ordered the test, actual test results, normal range for results, flagged abnormal results and, of course, lots of abbreviations and units of measurement.
Once you're familiar with how blood tests are presented, you can quickly scan the page for the flagged abnormal results if there are anywhich will be labelled as either "L" oab too low, what is the cost of a defibrillator "H" for too high. You don't need to memorize the normal ranges of any measured component because they will always be printed alongside your test results as a handy reference.
Distinguish between blood cells and what abnormal results may indicate. As noted above, the main cells of your blood are red and white blood cells. RBCs contain hemoglobin, which carries oxygen to all the tissues of the body. WBCs are part of the immune system and help to destroy pathogenic microorganisms such as viruses, bacteria aalcohol parasites. On the other hand, a high WBC count termed leukocytosis usually signifies that your body is fighting an infection.
Some drugs, especially steroids, can also increase the WBC count. Normal RBC ranges are different between men and women. Hematocrit the percentage of your blood made up by RBCs and mean corpuscular volume average volume of RBCs are two ways of measuring RBCs and both values are normally higher in men because of their higher oxygen needs.
Realize the functions of other basic elements in the blood. Two other components in the blood mentioned resluts a CBC are platelets and hemoglobin. As noted above, hemoglobin is an iron-based molecule that grabs onto oxygen as blood circulates through the alohol, whereas platelets are a part of the body's blood clotting system and help prevent excessive bleeding from injuries. On the other hand, a high platelet count termed thrombocytosis suggests a bone marrow problem or severe inflammation.
Levels of both RBCs and hemoglobin are connected because hemoglobin is carried inside RBCs, although it's possible to have malformed RBCs without hemoglobin termed sickle cell anemia. Many compounds "thin" the blood, which means that they inhibit platelet stickiness and prevent blood clotting.
Common blood thinners include: alcohol, many types what do cells use nutrients for drugs ibuprofen, aspirin, heparingarlic and parsley. Ressults 2 of Understand what lipid how to splice nylon rope are. Lipid profiles are more specific blood tests that are helpful for determining your risk of cardiovascular disease, such as atherosclerosis, heart attack and stroke.
A lipid profile typically includes how to reduce pdf size in acrobat cholesterol includes all the lipoproteins in your what is a causal relationshiphigh-density blooe cholesterol the "good" kindlow-density lipoprotein cholesterol the "bad" kind and triglycerides, which are fats usually stored in fat cells.
HDL removes excess cholesterol from the blood and carries it to the liver for recycling. Gesults deposits excess cholesterol in blood vessel in response to injury and inflammation, which tto trigger atherosclerosis clogged arteries. Recognize the implications of a blood sugar test. A blood sugar test measures the amount of glucose circulating in your blood, usually after fasting for at least 8 hours.
Other causes of high blood glucose include: severe stress, resjlts kidney disease, hyperthyroidism and an inflamed or cancerous pancreas. Learn what the CMP is. A CMP is a comprehensive metabolic panel, which measures lots of other constituents in your blood, such as electrolytes charged elements, typically mineral saltsother minerals, protein, creatinine, liver enzymes and glucose. Sodium is an electrolyte reaf for regulating fluid levels in the body and allowing nerves and muscles alchol work properly, but too much resulgs lead to hypertension high blood pressure and increase your risk of heart attack.
Other electrolytes, such as potassium, can be included in this section. Bilirubin, albumin and total protein can be included in this section.
If your blood urea nitrogen BUN and creatinine levels are too high, that likely indicates problems with your kidneys. Other elements in a CMP include albumin, chloride, potassium, calcium, total protein, and bilirubin. Low rfsults high levels of these nlood can indicate the presence of disease. Include your email address to get a message jow this question is answered.
Helpful 0 Not Helpful 0. You can learn all the units of measurement if you like, but it isn't needed as the number itself compared to the normal range is the important thing.
Understanding what your blood test results mean in relation to normal values is important for you to decipher, but only health professionals are qualified to interpret the results and use them as a guide for making an accurate diagnosis.
Related wikiHows How to. How to. Rexults References 1. About This Article. Medically reviewed by:. Mandolin S. Co-authors: 9. Updated: March apcohol, Categories: Blood Tests. Article Llab X To read blood test results, scan the results and look for anything labeled "L," which means it's too low, or "H," rest means it's too high. Italiano: Leggere gli Esiti degli Esami del Sangue.
Thanks to all authors for creating a page that has been read 85, times. This article made me tesy much more prepared to look at the results and understand what they mean!
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Nov 22, · Fasting blood sugar test is a test used to determine the amount of sugar present in a blood sample after a person has fasted overnight. Fasting really means refraining from eating or drinking any food or liquids other than water for at least 8 hours. The fasting blood glucose (sugar) test is used to detect diabetes.. Usually, a blood sample is taken in a lab or a hospital, in the morning. Fecal occult blood test for colorectal cancer screening: an evidence-based analysis. Ont Health Technol Assess Ser. ;9(10):1– PMID: Fecal Occult Blood Test (FOBT): MedlinePlus Lab Test Information. MedlinePlus. Published October 2, Janz T, Lu K, Povlow MR, Urso B. Order Lab Tests Online Yourself. Since , Request A Test has been an innovator in direct-to-consumer lab testing by providing convenient, affordable, and quick online lab datingescortusa.com to our large volume of business, national physician network, and partnership with two of the largest and certified labs in the U.S., we are able to offer cheap lab tests (up to 85% off retail pricing) without.
Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. Create a personalised content profile.
Measure ad performance. Select basic ads. Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. A fecal occult blood test FOBT is a non-invasive way to screen your feces, or stools, for blood that's not visible to the naked eye, known as occult blood.
Your doctor may order a fecal occult blood test to determine if you might have an underlying condition such as colon polyps, diverticulosis, hemorrhoids , an ulcer , an inflammatory bowel disease called colitis , or colorectal cancer.
This test is not diagnostic, but would serve as an impetus for additional testing. Your doctor may order an FOBT for these reasons:. Screening for Colorectal Cancer. The FOBT is most commonly used as a screening tool to look for blood in the stool of people who are 45 years or older who are at average risk of developing colorectal cancer. Colorectal cancer is the number two cause of cancer-related deaths in the United States, as well as the third most common type of cancer, and it often doesn't have any obvious symptoms until it's in the later stages.
Most cases start with benign, or harmless, colon polyps, which are growths of tissue that are actually quite common in people over the age of 50 years. However, some of these polyps become precancerous or cancerous, causing them to grow and bleed in microscopic amounts when stool passes by. Catching cancer early can greatly improve your treatment outcome.
One potential drawback of the FOBT is that it doesn't always accurately show what's going on in your body.
For instance, some cancer and colon polyps don't bleed, which could lead to a false-negative test result when you actually do have cancer or polyps. Looking for Possible Causes of Anemia. Your doctor may order an FOBT if you have signs and symptoms of anemia, a condition in which your body doesn't have enough red blood cells to carry oxygen through your bloodstream effectively.
If you've already been diagnosed with anemia, your doctor may also recommend an FOBT if the cause of your anemia hasn't been found. The test results can show if blood loss from your digestive tract may be part of the cause of your anemia and give your doctor direction on how to proceed.
For instance, if your test is positive for blood in your stool, your doctor knows to then test you further for conditions that could cause the bleeding, such as ulcers, diverticulosis, or colon polyps. If your test shows that there isn't any blood in your stool, your doctor will likely move on to look for another potential cause of your anemia.
Because this is a non-invasive test, there are no risks involved with the FOBT. Your doctor will provide you with an FOBT kit, which will include instructions on how to collect your stool samples at home. Preparation for the test will depend on which method you've been asked to use:.
Your doctor may instead recommend that you purchase a flushable reagent pad or tissue. It works similarly to the gFOBT by using a chemical that changes color if there's blood and, like the gFOBT, there are dietary restrictions you need to follow before you do the test.
You'll read the results yourself and send them to your doctor. Though this test is fairly sensitive, many doctors prefer to do the gFOBT or the FIT because of the chance that patients won't be able to interpret the test results as accurately as a lab technician would. The total time this test takes will depend on instructions provided by your doctor and the method that's being used.
If you're having a guaiac smear test gFOBT , you will dedicate about a week and a half for test preparation and sample collection. The entire process, including evaluation of your sample s and delivery of your results, may take up to four weeks. With a fecal immunochemical test FIT being used for colorectal cancer screening, you'll spend just a few minutes collecting your sample. If your doctor is doing a FIT to look for bleeding in your digestive tract due to anemia or wants to do a more thorough colorectal cancer screening, you'll need about two and a half to three weeks, start to finish.
This depends on the lab, but largely has to do with the fact that you need to collect three different samples on separate days.
The flushable reagent pad or tissue test doesn't take as long as the other two methods because you read and record the results yourself after three bowel movements on consecutive days, then send the results to your doctor. You collect the stool samples for these tests in your home and then bring or mail them to your doctor's office, or send them to a lab to be analyzed for the presence of blood. In the case of the reagent pad or tissue test, you perform this test and record the results at home.
Food and Drink. Your doctor will give you specific instructions, but you will likely need to avoid the following before and during your gFOBT or reagent pad test in order to get the most accurate results:. As mentioned, you won't need to avoid any food or medication if you're doing the FIT. Cost and Health Insurance. The cost of an FOBT depends on what method is used, as well as what laboratory your results come from, but it's considered a low-cost test.
However, if you're on a health insurance plan that was grandfathered in, meaning that it existed before when the ACA was enacted, these requirements don't apply to your insurer.
This doesn't mean that your FOBT won't be covered, but you should contact your insurance company or someone in human resources at your place of work to find out for sure. If you're on Medicaid, coverage for this test as a colorectal cancer screening will depend on what state you're in.
Contact your local Medicaid office to find out more. Be sure to follow the instructions provided by your doctor and that accompany your kit exactly, as there can be variations between manufacturers. Remember that you will need to make sure that you have followed the specific dietary restrictions your doctor gave you, if any, before proceeding to take samples of your stool. If you don't, your results may not be accurate. Throughout the Test. Once you're ready to collect your stool samples, this should only take you a few minutes each time.
In general, for the gFOBT and the FIT , you will use a dry container from the kit to collect your bowel movement before it goes into the toilet bowl or mixes with urine. After you smear the stool on a card, you'll store it in an envelope overnight to dry; alternatively, you may be asked to store it in a container. You can flush the rest of the bowel movement down the toilet.
You will follow this same process for the next two bowel movements you have, as long as they're on different days, unless you're only doing one sample. Once you have collected your samples from three bowel movements, you will mail or bring them to your doctor's office or ship them to a lab to be analyzed for the presence of blood. The reason you usually collect three samples for this test is that if you have polyps or cancer, the bleeding may not be continuous.
Follow the instructions that come with your kit, but generally with the flushable reagent pad or tissue , after you have a bowel movement, you place the pad or tissue in the toilet. You do this three times on different days and record any changes you see. Note: Results can be affected by toilet bowl cleaners, so it's best to test using one containing clean water. Make sure that you get your samples sent to the appropriate place as soon as you can to help ensure your results are as accurate as possible.
Your kit will explain how to seal and label what you've collected appropriately. If you're using the flushable reagent pad, send your results to your doctor to keep on file. If your stool samples were sent to a lab, you may have to wait for two weeks or longer for your test results, which will be either positive there's blood in your stool or negative there's no blood in your stool. Assuming it's not a false-positive, a positive gFOBT or reagent pad result means that you have bleeding somewhere in your digestive tract, while a positive FIT result is a little more specific and shows that you have bleeding somewhere in your lower digestive tract.
Though the majority of results are negative, this doesn't always mean you don't have colorectal cancer or polyps. Some polyps and cancers don't bleed, so your test may be "clean" despite the presence of these issues. Remember, too, that a positive test result doesn't necessarily mean you have cancer; something else could be going on in your digestive system like hemorrhoids, benign polyps, an ulcer, colitis, or diverticulosis, or you may have swallowed blood that's due to bleeding in your nose or gums.
If you used a flushable reagent pad or tissue, your kit will explain what color change to watch for and how to record the results.
Know, however, that results can be affected by blood that's in your urine or from your menstrual period. If you have any questions about your test results, be sure to talk to your doctor.
If you had an FOBT to screen for colorectal cancer and your test results are negative, your doctor will probably recommend that you have the test again in a year as long as you are at average risk.
Your doctor may also order a colonoscopy as another method of screening for colorectal cancer to ensure that your results aren't, in fact, false-negative. For people with an average risk for colorectal cancer, a colonoscopy is only needed every 10 years.
If your stool samples test positive for blood, your doctor will order a colonoscopy or a flexible sigmoidoscopy to investigate your digestive tract further and find the cause and location of the bleeding. These tests can diagnose many of the conditions that could be the cause of your bleeding, including ulcers, hemorrhoids, colitis, diverticulosis, polyps, and cancer. If you're diagnosed with ulcers, hemorrhoids, colitis, or diverticulosis, your doctor will talk to you about your treatment options.
The FOBT is an important screening tool in the fight against colorectal cancer. FOBTs have repeatedly been shown to reduce the number of deaths from colorectal cancer by 15 percent to 33 percent.
Limiting processed foods and red meats can help ward off cancer risk. These recipes focus on antioxidant-rich foods to better protect you and your loved ones. Sign up and get your guide! Kaur K, Adamski JJ. In: StatPearls [Internet]. Fecal immunochemical tests compared with guaiac fecal occult blood tests for population-based colorectal cancer screening. Can J Gastroenterol. Differential diagnosis in inflammatory bowel disease colitis: state of the art and future perspectives.
World J Gastroenterol. Medical Advisory Secretariat. Fecal occult blood test for colorectal cancer screening: an evidence-based analysis.