4 Causes of False Positive Pregnancy Tests

4 Causes of False Positive Pregnancy Tests

Causes of False Positive Pregnancy Tests - A home pregnancy test is a commonly used tool to determine if you are pregnant. Most home pregnancy tests are dipsticks that are inserted into your urine stream. The wand can then detect human chorionic gonadotropin (hCG), a hormone produced during early pregnancy.

Some pregnancy tests detect hCG in the early stages of pregnancy. A reputable home pregnancy test can be very accurate, but it is not easy.

False-positive and false-negative tests can occur for a number of reasons. It's also important to remember that if your pregnancy test is positive, it's important to talk to your doctor about starting early prenatal care.

Read on to learn more about false-positive home pregnancy tests.

1. Chemical Pregnancy

Even if you're not technically pregnant, a pregnancy test can still come back positive. This is called a false positive.

Sometimes it is caused by a chemical pregnancy. Chemical pregnancy occurs when a fertilized egg (embryo) cannot initially implant or grow. This can happen for a number of reasons.

Some causes of chemical pregnancy are unknown.

They are considered very common, but are usually not detected without a pregnancy test. False results from these initial tests can be emotionally exhausting.

Therefore, it is recommended that you wait up to a week from your due date to start using a home pregnancy test.

2. Ectopic pregnancy

Occasionally, a fertilized egg may implant outside the main cavity of the uterus, causing an ectopic pregnancy. An ectopic pregnancy is a serious medical emergency and must be treated immediately.

An ectopic pregnancy usually occurs when a fertilized egg gets caught in a fallopian tube while it is moving into the uterus. This type of ectopic pregnancy is also known as a tubal pregnancy.

• An ectopic pregnancy is possible, but risk factors include:
• scarring or inflammation of the fallopian tubes
• Defective fallopian tubes or other birth defects
• History of infertility treatments such as in vitro fertilization (IVF)
• History of uterine or fallopian tube surgery
• History of previous uterine infections
• History of previous ectopic pregnancy

An ectopic pregnancy can also occur in the cervix, ovaries, or abdominal cavity.

An ectopic pregnancy is an emergency. It cannot develop into a normal pregnancy and, if left untreated, can harm a woman. The embryo cannot survive because it has nowhere to grow or develop outside the womb.

Excessive bleeding or loss of reproductive organs may occur. Bleeding and pain in early pregnancy require immediate evaluation by a healthcare professional.

Embryos still produce hCG even when implanted in the wrong location. It can lead to false-positive results in home pregnancy tests.

• Symptoms of an ectopic pregnancy include:
• sharp pain in the abdomen, pelvis, shoulder, or neck
• Severe pain on one side of the stomach
• Light or heavy vaginal spots or bleeding
• dizzy or faint
• pressure on the workplace
• If you suspect an ectopic pregnancy, see your doctor right away.

3. Recent miscarriage or abortion

You may still test positive after you lose your pregnancy through miscarriage or an abortion.

During pregnancy, hCG levels continue to increase, usually doubling every few days, peaking at about 10 weeks. This is before the placenta is formed and is functioning around 12 weeks.

Hormones can remain in the blood and urine for up to six weeks after pregnancy is over. False-positive tests may be done until hCG levels return to pre-pregnancy levels.

If a miscarriage occurs spontaneously, not all of the tissues involved in the pregnancy may be removed. This can cause hCG levels to remain high among more worrying symptoms, such as persistent bleeding or fever.

Ultrasound is usually needed to determine if an intrauterine pregnancy has been confirmed, has been lost, or if there is a fetus with no heart activity.

When this occurs, a simple surgical procedure called dilatation and curettage (D and C) is often required to remove tissue, depending on symptoms and length of pregnancy.

4. User error

Home pregnancy tests are not easy. It is very important to follow the package instructions exactly. Check the expiration date before using the test.

Even with this protection, user error can occur. One of the most common mistakes is taking the exam too early in the cycle. This can lead to false negatives or false positives

It is also important to use the test when the urine is not too diluted with water. Use the test if your urine is very concentrated, such as when you first wake up in the morning.