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Which of the following is not a function of amniotic fluid?
What is the primary cause of the normal increase in amniotic fluid as a pregnancy progresses?
Which of the following is not a reason for decreased amounts of amniotic fluid?
Why might a creatinine level be requested on an amniotic fluid?
Amniotic fluid specimens are placed in ambercolored tubes prior to sending them to the laboratory to prevent the destruction of:
How are specimens for FLM testing delivered to and stored in the laboratory?
Why are amniotic specimens for cytogenetic analysis incubated at 37C prior to analysis?
Filtration of amniotic fluid is required to avoid decreased values in the test results for:
A significant rise in the OD of amniotic fluid at 450 nm indicates the presence of which analyte?
Plotting the amniotic fluid OD on a Liley graph represents the severity of hemolytic disease of the newborn. A value that is plotted in zone II indicates what condition of the fetus?
The presence of a fetal neural tube disorder may be detected by:
An AFP MoM value greater than two times the median value is considered an indication of a neural tube disorder
When severe HDN is present, which of the following tests on the amniotic fluid would the physician not order to determine whether the fetal lungs are mature enough to withstand a premature delivery?
The foam or shake test is a screening test for which amniotic fluid substance?
Prior to 35 weeks’ gestation, the normal L/S ratio is less than 1.6.
When performing an L/S ratio by thin-layer chromatography, a mature fetal lung will show:
Phosphatidyl glycerol is present with an L/S ratio of 1.1
A rapid test for FLM that does not require performance of thin-layer chromatography is:
Does the failure to produce bubbles in the Foam Stability Index indicate increased or decreased lecithin?
Microviscosity of amniotic fluid is measured by: