Flushable reagent stool blood test

定义

Flushable reagent stool blood test is an at-home test to detect invisible blood in the stool.

选择的名字

Stool occult blood test - flushable home test; Fecal occult blood test - flushable home test

如何执行测试

This test is performed at home with disposable pads. You can buy the pads at the drug store without a prescription. Brand names include EZ-Detect, HomeChek Reveal, and ColoCARE.

You do not handle stool directly with this test. You simply note any changes you see on a card and then mail the results card to your health care provider.

要做测试:

• Urinate if you need to, then flush the toilet before having a bowel movement.
• After the bowel movement, place the disposable pad in the toilet.
• Watch for a change of color on the test area of the pad. Results will appear in about 2 minutes.
• Note the results on the card provided, then flush the pad away.
• Repeat for the next two bowel movements.

The different tests use different ways to check for water quality. Check the package for instructions.

如何准备考试

Some medicines may interfere with this test.

Check with your provider about changes in your medicines you may need to make. Never stop taking a medicine or change how you take it without first talking to your provider.

Check test package to see if there are any foods you need to stop eating before doing the test.

考试的感觉如何

This test involves only normal bowel functions, and there is no discomfort.

为什么要进行测试

This test is mainly performed for 结直肠癌筛查. It may also be done in the case of low levels of red blood cells (anemia).

正常的结果

阴性为正常现象. It means you have no evidence of gastrointestinal bleeding.

Normal value ranges may vary slightly among different labs. Talk to your provider about your test results.

异常结果意味着什么

Abnormal results of the flushable pad mean there is bleeding present somewhere in the digestive tract, 这可能是由于:

• Swollen, fragile blood vessels in the colon that may result in blood loss
• 结肠癌
• 结肠息肉
• 扩大静脉, 被称为静脉曲张, in the walls of the esophagus (the tube that connects your throat to your stomach) that bleed
• Inflamed or swollen lining of the stomach or the esophagus
• Infections in the stomach or intestines
• 痔疮
• Crohn disease or ulcerative colitis
• Ulcer in the stomach or first part of the intestines

Other causes of a positive test, which do not indicate a problem in the gastrointestinal tract, 包括:

• Coughing up and then swallowing blood
• 鼻子流血

Abnormal test results require follow-up with your doctor.

风险

The test can have false-positive (the test indicates a problem when there actually is none) or false-negative (the test indicates there is not a problem, 但是有结果. This is similar to other stool smear tests which can also give false results.

参考文献

Garber JJ, Chung DC. Colonic polyps and polyposis syndromes. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 11日艾德. Philadelphia, PA: Elsevier; 2021:chap 126.

National Cancer Institute website. Colorectal 癌症 screening (PDQ) health professional version. www.癌症.gov/types/colorectal/hp/colorectal-screening-pdq. 2023年3月2日更新. 于2023年4月5日发布.

Rex DK, Boland CR, Dominitz JA, et al. Colorectal 癌症 screening: recommendations for physicians and patients from the U.S. Multi-Society Task Force on Colorectal Cancer. 我是胃肠醇吗. 2017;112(7):1016-1030. PMID: 28555630 pubmed.ncbi.nlm.国家卫生研究院.gov / 28555630 /.

US Preventive Services Task Force. Final recommendation statement. Colorectal 癌症: screening. www.uspreventiveservicestaskforce.org/uspstf/recommendation/colorectal-癌症-screening. 2021年5月18日更新. 2023年2月20日生效.

Wolf AMD, Fontham ETH, Church TR, et al. Colorectal 癌症 screening for average-risk adults: 2018 guideline update from the American Cancer Society. 癌症J临床. 2018;68(4):250-281. PMID: 29846947 pubmed.ncbi.nlm.国家卫生研究院.gov / 29846947 /.