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If a woman has an irregular period and she takes a pregnancy test and it comes back positive is there a chance it could still be negative?
Wiki User
∙ 11y ago
There are very few reasons for a positive pregnancy test 1) you are pregnant 2) you've had medication that has the HCG hormone in it (infertility drugs normally) 3) you read the test after the time allowed in the instructions so now the result doesn't count 4) chemical pregnancy (results in early miscarriage) 5) an HCG producing tumor.. very rare having an irregular cycle won't make you have a positive test when you are not pregnant, most likely you are indeed pregnant ~pawsalmighty
Wiki User
∙ 11y ago
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What is the meaning of a substance testing positive or negative for that nutrient?
A test coming out positive means that the test found whatever it was looking for. A test coming out negative means it didn't find anything. Like a pregnancy test coming out positive means a good chance of the person tested being pregnant. Negative means there are no signs of pregnancy in the tested substance.
Is there a chance of pregnancy if there was no penetration and negative pregnancy tests?
no, especially if there was no penetration
Can your dad be A negative if your A positive?
Yes, Rh negative is recessive, if your mother has two positive allelles, you have one of each and are rh positive. If your mother is heterozygous (negative and positive alleles) You have a 50% chance getting a positive allele.
Am i pregnant if one test came out positive and the same night i took another one and it came out negative?
This site cannot diagnose pregnancy. That requires medical facilities. Taking two test with differing results indicate a chance of pregnancy. What that chance is cannot be calculated. Seek medical advice.
Can you still be pregnant with 8 negative pregnancy tests?
Yes, but that is a small chance.
A pregnancy test came out faded and the second one positive and the third one negative is there a chance of pregnancy?
Yes. It sounds as though there is a strong possibility of pregnancy. I would speculate that the last oregnancy test was faulty/inaccuurate but suggest you go and see a doctor to confirm a result either way.
Can two parents with A positive blood have an Rh A negative baby?
not chance,but rarely can be.
Can an a negative and o negative make a positive baby?
It is possible but however the chances of this is 1-2 million chance
Why is Down syndrome not always correctly detected in pregnancy tests?
Pregnancy screenings for Down syndrome have a 5-8% false positive rate (test comes back positive, but the baby does not have Down syndrome) and a 35-40% false negative rate (test is negative, but baby has Down syndrome). This is due to a number of different factors that the screening depends on, such as the mother's age and weight, the age of the fetus, etc. Since the tests results come back as risk factors- the chance that the baby will have Down syndrome, for example 1 out of 270- and there is usually an arbitrary cutoff, such as 1 in 250, where the test counts as a "positive", this is why sometimes it is not correct. The "positive" or "negative" depends on chance, and obviously a high chance the fetus has Down syndrome does not necessarily mean it does have it.
Can a man with ab negative blood and a mother with o positive blood have a son with a positive blood?
there is a 50% chance of this
Can two parents with b positive make o positive?
Yes. The child will be either A positive or B positive or even AB positive. If the grandparents have a negative (A negative, B negative), there is a slight chance that the child will have a negative. A type O is out of the question. The fact that there are two positive parents means that there is no risk to the mother of Rh negative disorders.
What are the odds of a false positive on a home pregnancy test?
there is a 50/50 chance that the test are wrong.
