Doctor insights on:
Syphills Blood Test Negative
I'm 11 days late 3 neg tests... Waiting on a blood test. Could I just randomly be having an off cycle?
That's possible: Reasons for missed / late period include: an anovulatory cycle in which no egg is released, marked v or ^ in weight; eating disorder; Over-exercising (endurance athletics), stress, travel, significant illnesses, oral contraceptives & other meds, Illegal drug use, breast feeding, hormone imbalances and medical problems (i.e., PCOS). Pregnancy is #1 reason. ...Read more
When should I see a gyno im currently 19 days late taken 2 at homes both neg as well as a neg blood test 1 week ago?
Is it common for woman to get a false negative for blood test? I have read many story's with woman which this has occurred
What blood test?: False negatives, as well as false positives, can occur with any test, but most tests have a very low rate of both. In some cases, a false negative can be caused by bad timing. For example, if a pregnancy test or an HIV test is done too early, it may be negative even if the person is actually pregnant or infected with hiv. ...Read more
Two negative oraquicks and a negative 4th generation blood test after risk event 4 months ago should I take another or be worry free?
I am a frequent smoker (every couple days), how long will it take to show up negative on a blood test? I have a fast met. I work out regularly, 175 6'1
Beating a test: Not one of the physicians here are interested in helping you beat a drug test. All of us would choose to support you in any attempt to never pick up another cigarette in your life. But please do not ask us to break our ethics by helping you choose disease over health. ...Read more
Not really: The labs aren't 100% sensitive or specific. But if neither partner has had symptoms, there's no reason to believe the couple is infected. Wondering why you ask. Best wishes. ...Read more
I have all the symptoms of diabetes but blood test comes back negative. Any possible explanation?
Depends on symptoms:
If you have excessive thirst and excessive urination, it is possible to have 'water' diabetes (diabetes insipidus) rather than 'sugar' diabetes (diabetes mellitus); these require different tests.
Some people with diabetes have weight loss, fatigue, blurred vision, extreme hunger -- these can be due to lots of things, but thyroid, blood counts, and iron should be checked. See an eye dr. ...Read more
I have symptoms of celiacs disease but don't have it due to just having a negative blood test, what could it be?
Depends: It depends on your symptoms. Also, blood tests can be negative at some times and later can be positive. Depending on how severe your symptoms are, you can always see a gastroenterologist so they can get a full history, review your lab tests and see if they can help you with a diagnosis of celiac disease or something else that explains your symptoms. ...Read more
Is it normal or shoud I worry? I took hpts and all negative even after being 12days late but had blood test and it was positive.
Can be normal: There is a condition in which blood pregnancy test is positive and when measured it shows really low values. Also negative pregnancy test is negative. Is called heterophylic ab syndrome. If pregnancy test still negative more likely this is your problem. ...Read more
Can you tell me in diagnosing malaria, if the first blood test is negative, what chances are there that the person has the disease?
Pretty good: The level of parasites in the blood may be quite low at first. The familiar microscopic study with a giemsa stain is difficult and requires a lot of experience and skill. If there's a high index of suspicion, a person might be treated empirically, or it may be wiser to watch and test again if the disease becomes worse or really looks like malaria. ...Read more
My last LMP was the 8th october n lasted 5 days now 18 days late 4 negative home tests and a negative blood test what ele could it be?
Anovulation: You could be having an anovulatory cycle. These are cycles in which the ovary fails to release the egg. This alters hormonal levels and disrupts the cycle. Call your doctor. ...Read more
What if I took the blood test a day after implantation. Could I've gotten. A false negative because I took it to early. Also before Af came?
Too early to test: Conception, as defined by the generation of a fertilized ovum, occurs within day or so of the sex. However, it takes about two weeks for the embryo to make enough HCG to produce a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. Use first morning urine and follow instructions for the test carefully. ...Read more
For the past 2 weeks I've had positive HPTs, but negative blood test, I'm still having positive HPTs from different brands too. Any thoughts?
Hello im 57 had at least 8 neg. Prego test just got a blood test today to double ck things was that a good thing to do? I'm hoping its negative..
Was not needed:
If you did the tests correctly and did those more than three weeks after the last episode of sex, you probably did not need the blood test. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex. ...Read more
9 positive preg tests followed instructions exact neg blood test 2 weeks ago just repeated the blood test what's the chances of 9 tests being wrong?
Depends: How many days after the hpt was the blood test done? If it was two weeks after the positive hpt, it is could be that an early pregnancy was lost spontaneously. However, from what you described you did not have a period between the positive hpt and negative blood test. As I may have stated earlier, I would question the technique of doing the hpt. ...Read more
Latent TB: An interferon gamma release assay like quantiferon is a improvement over the old TB testing. A positive means you have been infected with TB but may or may not have disease. A chest xray is the next step to see if you have any lung involvement. In addition an exam to rule out any lymph node or other involvement is needed. If exam and x-ray are normal you have what is termed latent TB infection. ...Read more
Need more info: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, you did not state what blood test. Were you tested for serum prolactin? How much discharge? Any relation to periods? It would be prudent to discuss it with your doctor. ...Read more
Yes: Pregnancy tests are usually positive once the beta HCG level reaches 50. A serum pregnancy test is usually the most accurate early in pregnancy. ...Read more
Nothing: A false negative on this type of testing is a function of the test itself, so nothing that you do, or don't do, will change the accuracy of the test. Good luck. ...Read more
Not pregnant: If blood test is negative.Get a more detailed answer ›
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