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The test has been widely used throughout North America and Europe as one of the core newborn screening tests since the late 1960s. The test was initially a bacterial inhibition assay , but is gradually being replaced in many areas by newer techniques such as tandem mass spectrometry that can detect a wider variety of congenital diseases .
The test was developed by Leonard Apt (1922–2013), [3] an American pediatric ophthalmologist. The test was originally used to identify the source of bloody stools in newborn infants. It has been modified to distinguish fetal from maternal hemoglobin in blood samples from any source. [4]
A hematoma, also spelled haematoma, or blood suffusion is a localized bleeding outside of blood vessels, due to either disease or trauma including injury or surgery [1] and may involve blood continuing to seep from broken capillaries.
With cases, test positivity and hospitalizations due to COVID-19 ticking up again, it's time to refresh your memory on how to take at-home tests — especially when the results are confusing.
phenylketonuria (PKU card—see Guthrie test) PLAT: tissue plasminogen activator: PLIF: posterior lumbar interbody fusion (a type of spinal fusion) PLT: platelets: PM: post meridiem (in the afternoon) PMB: post-menopausal bleeding (bleeding after menopause) PMD: primary medical doctor PMDD: premenstrual dysphoric disorder: PMH
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The KB test is the standard method of quantitating fetal–maternal hemorrhage (FMH). It takes advantage of the differential resistance of fetal hemoglobin to acid. A standard blood smear is prepared from the mother's blood and exposed to an acid bath. This removes adult hemoglobin, but not fetal hemoglobin, from the red blood cells.