Do vitamins affect a pregnancy test

pregnancy test

Regardless of whether one hopes or fears the positive result: Pregnancy tests help you find out if you are pregnant in minutes. A pregnancy can be determined by detecting the pregnancy hormone human chorionic gonadotropin (hCG) in the urine or in the blood. How the test works exactly and in which cases the result can be incorrectly positive or negative is explained in the following text.

How does a pregnancy test work?

A commercially available pregnancy test is usually one Urine testwho that Pregnancy hormone human chorionic gonadotropin, short hCG, proves. Human chorionic gonadotropin is produced by part of the placenta educated. The hormone promotes the Release of progesterone, which in turn ensures that the uterine lining continues to build up and the Getting pregnancy remains. Human chorionic gonadotropin can be im blood and in urine be detected.

Most pregnancy tests show the positive result with two parallel ones colored lines or one Plus sign at. Some pregnancy tests can go straight to the Midstream urine be held while others are in one urine-filled vessel need to be dived. The detection of hCG in the pregnancy test is carried out by a simple Antibody response. About a Filter paper strips (often wrapped in a plastic stick) the urine is absorbed. The hCG hormone in the urine binds to those in the paper color-marked antibodies. This antibody complex is sucked up the filter paper strip with the liquid. At a defined point (on the first line) the complex is replaced by a Fixed Antibody Line stopped and bound. If there is hCG in the urine, the line changes color visibly. Also one slight discoloration is as positive test result to watch. The remaining unbound antibodies migrate to the second line and stain this too. These Line controlledwhether enough fluid has been absorbed by the strip and the test result can be considered valid.

Tests are now also available in stores that show the Result digital Show. In this case, the color result is measured by photodiodes and output electronically. However, this additional step in the evaluation creates more false negative resultsbecause the diodes occasionally do not recognize an actually positive result.

When can a pregnancy test be done?

The fertilized egg embeds itself in the uterine lining around the fifth day after fertilization. At this point a placenta is formed and slowly begins to produce hCG. HCG is detectable in the urine from about 14th day after fertilization. This corresponds to the first day of the missing rule. For this reason, it is recommended to use by Failure to rule wait and then run the test. in the blood hCG can often be started from seventh day after fertilization prove.

Human chorionic gonadotropin is excreted in the urine and is most concentrated in the morning. Therefore, a pregnancy test should be performed if possible performed in the morning become.

How sure is the result of a pregnancy test?

If the pregnancy test is done correctly, it gives about 99 percent the correct result. In any case, the waiting period wait until the test result is read as stated in the instructions on the package. Reading too early or too late can falsify the result.

The hCG levels are highest between the 5th and 10th week of pregnancy. This makes the pregnancy test the most reliable at this time. Before that it may be that not enough hCG formed yet and the test remains negative despite a pregnancy. Even if before the test drank too much became (and thereby the urine too much diluted was) or none Morning urine used, the test result can false negative be. Occasionally a Urinary tract infection too many bacteria in the urine will falsify the result.

Some reasons can also lead to one false positives Lead to a test result, i.e. a positive result, although there is no intact pregnancy. So it is possible that there was a short-term pregnancy that fertilized Egg cell but already again dead is. Usually this is followed by one delayed menstrual period. Also Urinary tract infections and some medication can lead to a false positive result, as can special ones Tumor types (e.g. germ cell tumors and molars).

What happens if the pregnancy test is positive?

If the pregnancy test is positive, a gynecologist should be consulted in the next few days. In most cases, this will supplement the test with a blood test. The level of hCG in the blood can also be used to estimate how long the pregnancy has already existed. From about the sixth week of pregnancy onwards, pregnancy can also be detected in the ultrasound examination.

What does it mean if there is no menstrual period but the test is negative?

The most common reason for one Missing menstrual period is a pregnancy. To Beginning hCG levels are still very high during pregnancy low. If pregnancy is expected but the test is negative on the first day of the expected period, another test may be used one week later Provide information.

Nevertheless, there are other reasons why the menstrual period does not occur or occurs late. These include, among other things Stress reactions, malnutrition or malnutrition, changed living conditions, changes in time and climate. Many women who use contraception pill also often have no menstrual period. Through the pill is this risk, despite no bleeding pregnant to be, very low.

Can men also have a positive test result?

Usually men make up no human chorionic gonadotropin. However, there are special germ cell tumors that are classed as testicular tumors and that produce the hormone. In this case, as in pregnancy, hCG can be detected in the urine and blood.

Ovulation Calendar Post-Pill Pregnancy Test


Kamer, S. M. et al. "Analytical sensitivity of four commonly used hCG point of care devices." Clinical biochemistry, 2015, 48.6: pp. 448-452. Online:, accessed on January 12, 2016

P. Berger, C. Sturgeon. "Pregnancy testing with hCG - future prospects." Trends in Endocrinology & Metabolism 2014, December 25: pp. 637-648. Online:, accessed on January 12, 2016

Office on Women's Health. U.S. Department of Health and Human Services. Pregnancy test. Online at, accessed on January 12, 2016

Important NOTE: This article contains only general information and descriptions on the subject of pregnancy tests. It is not suitable for self-diagnosis or self-treatment and under no circumstances can it replace a doctor's visit.

If you click on these buttons, you consent to your data being transmitted to the respective social networks and, if necessary, stored there. You can find out more under "i".