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A urine or blood pregnancy test looks for a hormone called human chorionic gonadotropin (hCG), which is produced after a fertilized egg attaches to the wall of the uterus. So when should women take diagnostic tests for pregnancy?
1. Pregnancy test by blood test
Blood tests to detect pregnancy are not as common as urine tests. It helps determine pregnancy earlier than a urine pregnancy test, about 6 to 8 days after ovulation.
There are two types of pregnancy blood tests including:
Qualitative hCG test : This test can be done to confirm pregnancy as early as 10 days after conception. Quantitative hCG test: This test is commonly used to identify ectopic pregnancy, miscarriage, when hCG levels drop rapidly. That's because this test can detect hCG levels at very low concentrations. SEE ALSO: Why is it important to have a urine test during pregnancy?
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2. Urine test
Urine test with pregnancy test strips helps to preserve the privacy of the pregnancy tester, it is convenient to be able to do the test easily at home and gives quick results. Some ways to use a pregnancy test stick that can be used include:
Hold the pregnancy test stick with the flow of urine Collect urine in a cup and dip the pregnancy test strip in Collect urine into the cup and use the dropper to put on the stick pregnancy test Then you wait a few minutes before reading the results. After confirming the results from the pregnancy test, can you go to the doctor to perform more accurate tests to confirm pregnancy?
The accuracy of a home urine pregnancy test depends on:
How well you follow the instructions for using the pregnancy test strips Ovulation time and time of egg implantation Period of testing from date Relationship Sensitivity of pregnancy test strips
3. When does a pregnancy test give accurate results?
Pregnancy test gives accurate results when performed on the first day of a missed period in the morning, when the urine is concentrated.
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4. Meaning of pregnancy test results
A negative pregnancy test can mean many different things such as:
Not pregnant The test is done too early to detect HCG Improperly performed test If the pregnancy test is positive, the woman should Go to the doctor to confirm your pregnancy and get advice on pregnancy monitoring.
If the result is negative, but the woman has signs and symptoms of pregnancy, she should test again in 1 week or perform a blood test with more accuracy.
5. Drugs that affect pregnancy test results
Some drugs can affect the accuracy of the pregnancy test, including:
Promethazine is used to treat certain allergies Drugs for Parkinson's disease Sleeping pills Some antipsychotics, in including chlorpromazine Opioid drugs such as methadone Sedatives Anticonvulsants, including epilepsy medications Infertility medications Diuretics
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6. Health problems that affect pregnancy testing
In some cases, the result is positive but the woman is not actually pregnant. It may be related to a number of health problems that increase HCG levels such as:
Deficiency of immunoglobulin A (IgA), an antibody important in immune function Pregnancy trophoblastic neoplasms transitional cells of the bladder and urinary tract, prostate cancer, kidney cancer, and cancer of the digestive system. When you suspect that you are pregnant, you can perform blood tests, urine tests to get an accurate diagnosis. However, the results can be false positives and false negatives. Therefore, for the most accurate results, you can go to medical facilities to examine and do diagnostic tests, from which the doctors can also advise you on the next steps. .
Currently, at Vinmec International General Hospital, it has been providing high quality, comprehensive and methodical prenatal screening testing services in terms of professional qualifications, machinery and service systems, ensuring ensure that a woman's pregnancy takes place in the safest and most convenient way. In addition, at Vinmec, there are also genetic screening and examination services for everyone in order to detect genetic diseases early, thereby taking early intervention measures to ensure the comprehensive health of people. both mother and baby.
Please dial HOTLINE for more information or register for an appointment HERE. Download MyVinmec app to make appointments faster and to manage your bookings easily.
References: webmd.com, medicalnewstoday.com
