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Doctor insights on: Ishihara Testing

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Are RNA tests accurate for testing for HIV?

Are RNA tests accurate for testing for HIV?

Yes, but...: The HIV RNA tests are checking for the presence of certain parts of HIV. When positive, it can give us an idea of how much HIV is present. Most of the time, when positive, it highly suggests HIV infection. However, in rare instances, there can be false positive tests, which mean that a positive test may represent something else, not HIV. Thus, the best test for HIV is a standard HIV antibody test. ...Read more

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Whats ishihara color blindness test?

Whats ishihara color blindness test?

Color plates: The ishihara test plates are a series of dots of various colors with an embedded number or symbol which cannot be easily seen by the color deficient due to color confusion. They are the most commonly available test in ophthalmologists office although others are also available and some are better at separating the forms of color deficiency out. Ishihara is a good screening test. ...Read more

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Do ovum donors undergo genetic testing or pedigree evaluation?

Do ovum donors undergo genetic testing or pedigree evaluation?

Yes: Check with your rei specialist for details, but all ovum donors would be asked to report a detailed family history and would be tested for common recessive disorders, such as cystic fibroisis. Many programs would also request more extensive testing including a panel of 100 such recessive diseases, including such problems as spinal muscular atrophy, the askenazi jewish panel, fragile x, & more. ...Read more

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What are the available genetic testing for detecting the carrier gene for colorblindness?

What are the available genetic testing for detecting the carrier gene for colorblindness?

Research tool: From my reading, it's been available for about a year as part of the reserach project for treating colorblindness with new genes. ...Read more

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How precise are urine samples for testing chlamydia?

How precise are urine samples for testing chlamydia?

Pretty accurate: The newer urinary tests for chlamydia and gonorrhea use dna technology and are fairly accurate. ...Read more

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Why isn't herpes testing part of routine std testing panel?

Why isn't herpes testing part of routine std testing panel?

False Positive test: HsV 1 (cold sores on the mouth) blood tests cross react with HSV 2 ( genital herpes) blood tests. Leading to false positive tests and mental anguish . Herpes cultures can only be done when you have a active genital herpes outbreak. Not screening. ...Read more

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What are genomics tests?

What are genomics tests?

Gene mutations: Your genes are one of the factors than can influence your health and disease. The usefulness of gene testing is still evolving. Your family history can help guide you as to how useful it may be for you. The most useful areas today are testing for recessive genes, risk analysis for certain diseases like cancer, and pharmacogenomics. Results can be confusing so counseling is important. ...Read more

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What tests are done to check for celiac? Stool test. Blood test? Specific test?

What tests are done to check for celiac? Stool test. Blood test? Specific test?

Several available: You can go through a two stage screening process.Celiac disease is an exaggerated form of gluten intolerance and may be suspected based on blood tests: elevated ttg-iga, if IgA deficient - ttg-igg.If the blood tests are suggestive an intestinal biopsy to study the cell changes is confirmatory. ...Read more

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Celiac disease blood testing involves what tests usually?

Celiac disease blood testing involves what tests usually?

TTG IgA , others : Arguably the most accurate is the ttg IgA level. In those who are IgA deficient, i believe a dpg igg is the best. Others include anti-endomysial antibodies. The gold standard is duodenal biopsies obtained during endoscopy. ...Read more

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Is genetic testing necessary for CMT diagnosis?

Is genetic testing necessary for CMT diagnosis?

No: Diagnosis can be made by other means, though genetic testing will provide confirmation and pin point the defect. See this site for more info. http://www.ncbi.nlm.nih.gov/pubmedhealth/pmh0001741/. ...Read more

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Is brca genetic testing a simple blood test?

Is brca genetic testing a simple blood test?

Yes: BRCA testing can be performed from either blood or saliva. A significant amount of DNA needs to be present for adequate testing so most companies require more than a finger stick blood draw. Usually a single blood tube containing 3 ccs of blood is adequate ...Read more

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Are there quantitative tests for genetic differences?

Are there quantitative tests for genetic differences?

Genetic tests: Yes. For example if you are taller that your relatives then you have the taller gene. Easy way to test for this is to measure what you think might be genetically determined such as how long a index finger is. They you measure this is 100 sets of identical twins and 100 sets of DZ twins. If length is closer in MZ twins that DZ twins that is strong proof of a genetic effect. ...Read more

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Sweat chloride testing for cystic fibrosis=standard tests?

Sweat chloride testing for cystic fibrosis=standard tests?

Yes, Gold Standard: The gold standard for a diagnosis of CF is 2 back-to-back sweat chloride tests. However, the ability to run genetic tests and detect the disease in this fashion is becoming more common. In fact, it is now standard procedure in all 50 states for newborn babies to be screened, via blood from a heel prick, for cystic fibrosis. ...Read more

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What is molecular testing for herpes ?

What is molecular testing for herpes ?

Trying to find virus: Molecular testing usually means a test that looks for actual fragments of the virus. For example, a test to detect traces of actual herpes virus dna (such as from a swab of a suspicious broken skin sore) would likely show a positive result if herpes viruses are in the sore. Contrast that to a herpes igg positive blood test, which merely says the person has had herpes sometime during her life. ...Read more