The results of a full blood count are compared to charts that list the normal range of numbers and ratios for each type of blood cell. A result above or below the normal range may indicate an abnormality.
Many illnesses, diseases or infections other than the ones listed below can cause an abnormal full blood count result. Abnormalities of the blood sample may include:. A blood smear can reveal:. The full blood count test is not foolproof and errors sometimes occur. If this happens, your doctor will want to repeat the test. Errors may include:. This page has been produced in consultation with and approved by:.
Allergy testing is used to find which substances provoke an allergic reaction. A person with amyloidosis produces aggregates of insoluble protein that cannot be eliminated from the body.
When a person is anaemic, the red blood cells have to work harder to get oxygen around the body. An aneurysm may have no symptoms until it is either very large or it ruptures. Barium tests are used to examine conditions of the digestive tract such as reflux, narrowing or ulceration.
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Skip to main content. Blood and blood vessels. Home Blood and blood vessels. Blood count. Actions for this page Listen Print. Symptoms of pregnancy vary from woman to woman, but the most common sign of early pregnancy is a missed period. Other common signs of pregnancy include:. You can get a home pregnancy test kit at the drug store without a prescription.
Most are inexpensive and easy to use. Many home pregnancy tests include a device called a dipstick. Some also include a collection cup. Your home test may include the following steps or similar steps:. If the results show you are not pregnant, you may want to try again in a few days, as you may have done the test too early.
HCG gradually increases during pregnancy. If your results show you are pregnant, you should make an appointment with your health care provider. During a blood test, a health care professional will take a blood sample from a vein in your arm, using a small needle.
After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This process usually takes less than five minutes. There is very little risk to having a blood test. You may have slight pain or bruising at the spot where the needle was put in, but most symptoms go away quickly. Your results will show whether you are pregnant. If you are pregnant, it's important to see your health care provider as soon as possible.
These are providers who specialize in women's health , prenatal care , and pregnancy. Regular health care visits during pregnancy can help ensure you and your baby stay healthy. Learn more about laboratory tests, reference ranges, and understanding results. A urine pregnancy test shows whether HCG is present. HCG indicates pregnancy. A pregnancy blood test also shows the amount of HCG. A missed period is often the first clue that a woman might be pregnant.
Sometimes, a woman might suspect she is pregnant even sooner. Read on to learn when and how to test for pregnancy. Symptoms such as headache, fatigue, and breast tenderness, can occur even before a missed period. The wait to know can be emotional. These days, many women first use home pregnancy tests HPT to find out. Your doctor also can test you. All pregnancy tests work by detecting a special hormone in the urine or blood that is only there when a woman is pregnant.
HPTs are inexpensive, private, and easy to use. Most drugstores sell HPTs over the counter. The cost depends on the brand and how many tests come in the box. They work by detecting hCG in your urine. HPTs are highly accurate. But their accuracy depends on many things. These include:. The most important part of using any HPT is to follow the directions exactly as written.
Most tests also have toll-free phone numbers to call in case of questions about use or results. If a HPT says you are pregnant, you should call your doctor right away.
Your doctor can use a more sensitive test along with a pelvic exam to tell for sure if you're pregnant. Seeing your doctor early on in your pregnancy can help you and your baby stay healthy.
Blood tests are done in a doctor's office. They can pick up hCG earlier in a pregnancy than urine tests can. Blood tests can tell if you are pregnant about six to eight days after you ovulate.
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