Pregnancy tests work by identifying hCG, the pregnancy hormone. After fertilization, the embryo implants in the uterine ...

Medically reviewed by Alyssa Dweck, MS, MD, FACOG Are you waiting with bated breath to see those two pink lines? Then there's ...

In the mid-1970s, the first at-home pregnancy test ... sample (e.g., saliva, urine, or blood) containing the biomarker moving through a polymeric lateral flow test strip via capillary action.

At-home pregnancy tests promise 99 percent accuracy. But the best time to take a pregnancy test and get the most exact result depends on when you conceive.

Showing a snap of the positive test, she explained ... Variety said the LP 'strips away the remnants of the perky personality,' that endeared Perry to so many of her fans.

However, hCG may not be adequately present in urine until 12 ... A false positive is also possible, which is a positive result on a pregnancy test when someone is not pregnant.

In summary, excess levels of urobilinogen and bilirubin in the urine may ... value of reagent strip glucose is now limited almost entirely to screening for hypergylcemia in pregnancy, and ...

Alcohol urine tests can detect alcohol or alcohol byproducts in your urine for 12 to 24 hours or more (up to 72 hours) with heavier alcohol use. Various factors contribute to the test results, such as ...

Subjects were randomly subjected to urine tests for drugs of abuse ... two scrambled eggs, two grilled strips of bacon, one croissant, one slice of toast with one part of butter, and non-citrus ...

Remove the foil on the test strip; 2. Add 60 μL urine to the pad; 3. Wait 25 min; and 4. Read the result using the reference scale card (invalid, negative, or grade 1–4 positive) (19). We conducted ...

They are easy to use. Most drugstores sell these tests. No prescription is needed. Urine pregnancy tests are very accurate. They can turn positive as early as the first week after a missed period. It ...