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Doctor insights on: Mthfr Dna Analysis

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Etiology of DNA mutations?

Etiology of DNA mutations?

Replication error: Most changes in dna come from errors in the duplication of the dna. But changes can occur in the structure from radiation and some chemicals especially those used in chemotherapy. Most mutations are harmless, some are tracked down by your normal reparative mechanism but a few can cause trouble including cancer. ...Read more

Dna (Definition)

Dna are the coding molecules found in all living things on earth which contain the instructions on how to build living things. Its is comprised the nucleotide molecules which are ...Read more


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Which method of prenatal testing analyzes chromosomes?

Which method of prenatal testing analyzes chromosomes?

Invasive: The two methods for testing fetal chromosomes are chorionic villus sampling and amniocentesis. There is research on obtaining fetal dna from maternal blood, but that is not yet in widespread use. ...Read more

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Is hiv-1-pcr quantitative and HIV RNA PCR quantitative same tests?can DNA PCR test be quantitative?

Is hiv-1-pcr quantitative and HIV RNA PCR quantitative same tests?can DNA PCR test be quantitative?

HIV testing: Yes. Viral testing can be qualitative or quantitative. Most HIV RNA testing is quantitative. ...Read more

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Is a noninvasive prenatal paternity bloodtest, done with blood from alleged fathers, cfdna and 317.000 genetic markers a reliable test?

Yes: Make sure the identity of the alleged fathers and pregnant mother are confirmed. Make sure no tampering with the blood. Science can reveal the dna. ...Read more

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Can comprehensive chromosome screening (CCS) in IVF screen for (1) partial trisomy, (2) unbalanced translocation, and (3) balanced translocation? Does testing parental karyotyping before CCS help?

Can comprehensive chromosome screening (CCS) in IVF screen for (1) partial  trisomy, (2) unbalanced translocation, and (3) balanced translocation? Does testing parental karyotyping before CCS help?

Test for Aneuploidy: Aneuploidy is the term used to describe any embryo with either too many or too few chromosomes. It is the cause of greater than 60% of miscarriages, as well as the most likely reason that patients do not get pregnant from an IVF cycle. The purpose of CCS is to analyze, select and transfer only embryos that do not have abnormalities in their number of chromosomes. A genetic consult is needed; ...Read more

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With bipolar ii, adhd, & c ptsd, what additional tests are beneficial? Ie: hormone, neurotransmitter , DNA mutation (mthfr, a1at ...) methylation etc.

Yes: I would definitely check mthfr and comt. Both these are involved in methylation. One is involved in neurotransmitter synthesis, and the other in breakdown. Therefore polymorphisms can impact mood, etc, and if so, vitamins and supplements can help the methylation cycle. I check mthfr in most of my patients. ...Read more

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Does mthfr heterozygous c677t mutation affect pregnancy?

Does mthfr heterozygous c677t mutation affect pregnancy?

Likely not much: The existing evidence does not support any strong connection between heterozygotes for either the c or a mutations of mthfr and poor pregnancy outcomes. Homozygotes may well be at greater risk. Depending on clinical history, different levels or surveillance and possible intervention can be considered. ...Read more

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Wht is an anti DNA lab test?

Wht is an anti DNA lab test?

Probably for lupus: Your question is a little vague, but i suspect you are referring to a test that is sometimes used to look for lupus. In lupus there are certain antibodies that are known as anti double stranded dna antibodies that target a protein in dna. This test looks for a specific auto-antibodies. ...Read more

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How do dna, mutation, genotype, phenotype, and natural selection interconnect to cause evolution?

How do dna, mutation, genotype, phenotype, and natural selection interconnect to cause evolution?

Modern synthesis: It's as well-established as anything in science, but would take more than 400 characters to explain. You owe it to yourself, as an educated person who must participate in community decision making, to understand it. There are a huge number of good books on the subject. Best wishes. ...Read more

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Pathology lab test for thalassemia?

Pathology lab test for thalassemia?

Electrophoresis: Blood counts can suggest thalassemia (small red blood cells). Some thalassemia can be confirmed with electrophoresis, which quantifies the different types of hemoglobin present in rbcs. Similar studies can be done on the parents for additional info. ...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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What is hemagglutinin (ha) gene and neuraminidase (na) gene?

What is hemagglutinin (ha) gene and neuraminidase (na) gene?

Flu virus genes: The hemaglutinin and neuraminidase genes are in influenza viruses. They code for proteins that are found on the surface of the flu virus. The viruses are named according to which type of hemaglutinin and neuraminidase proteins are on their surfaces (for example: h1n1 or h7n9). ...Read more

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+ gonorrhoeae DNA amplification test, but, neg. Amp RNA test(source urine). Do they have gonorrhoeae? Is one test more reliable?

+ gonorrhoeae  DNA amplification  test,  but, neg. Amp RNA test(source urine). Do they have gonorrhoeae? Is one test more reliable?

Complicated: Although these tests are very sensitive there are false positive results because of the potential presence of other benign species of neisseria. If you had to compare the two it would be without much relevant data. Bacterial culture will provide both a definitive diagnosis and allow determination of antibiotic sensitivities. ...Read more

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How do a gene mutation and a chromosomal mutation differ?

How do a gene mutation and a chromosomal mutation differ?

Mutations: A chromosome will contain many genes, so a chromosome mutation will effect many genes. A gene mutation will have an effect only on that gene. ...Read more

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Safety of chorionic sampling vs. Amniocentesis for prenatal diagnosis of chromosomal abnormalities?

Safety of chorionic sampling vs. Amniocentesis for prenatal diagnosis of chromosomal abnormalities?

Risks: The risk of pregnancy loss has been looked at in four randomized studies of cvs vs. Amniocentesis. All four studies show that both procedures have about the same risk of pregnancy loss. About 1 in 1600. Another cvs study showed that losses in a group of women who had the procedure were equal to losses in a group of women who didn't have the procedure. A loss may not be related to the procedure. ...Read more