shake test

foam sta·bil·i·ty test

a test for fetal pulmonary maturity, determined by the ability of pulmonary surfactant in amniotic fluid to generate stable foam in the presence of ethanol after mechanical agitation.
Synonym(s): shake test
Farlex Partner Medical Dictionary © Farlex 2012

shake test

Foam stability index, see there.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

shake test

A quick test to estimate fetal lung maturity. A sample of amniotic fluid is diluted with normal saline, mixed with 95% ethyl alcohol, and shaken for 30 sec. The continued presence of small foamy bubbles in the solution after 15 min confirms the presence of pulmonary surfactant.
Synonym: foam stability test; rapid surfactant test
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
As far as, knowledge of cold chain handlers is concerned, 8 (53.3%) had correct knowledge about all freeze-sensitive vaccines and only 6 (40%) had complete knowledge about "Shake Test." In 11 (73.3%) CCPs, open vials were correctly (i.e., separate box/zipper bag) placed inside ILR and had date and time mentioned in it for 8 (53.3%) CCPs.
They include the following: (1) the vestibulo-ocular and vestibular spinal reflex test, (2) the spontaneous nystagmus test, (3) the head-impulse test, (4) the head shake test, and (5) the Unterberger-Fukuda test (UFT).
Moreover, 31(74%) participants knew about shake test (performed to determine whether adsorbed vaccines have been affected by freezing) and 34(81%) vaccinators knew how to perform the test as they demonstrated it correctly.
About half of the students working on the project recently assembled at UH-Manoa to perform what's known as a shake test.
A jar shake test with a closed glass jar, coating media, and defoamer that are shaken in a shaker or by hand is often used.
Shake test has 100% sensitivity, 100% specificity and 100% predictive value in detecting freeze damaged vaccine.
This test is typically called the "shake test." Test articles are cut to size and placed in a volume of inoculum containing phosphate buffer and a known concentration of bacteria (E.
Once it passes the shake test, give the RF connector a close look.
The Shake Test to test damage to vaccines by freezing; Use of cool packs to prevent freezing; WHO-PDA Pharmaceutical Cold Chain Management on Wheels
According to the patent literature, the emulsion has a foam volume below 5cc as measured in the solution shake test, and the retention of moisture is still measurable at least 30 minutes after the bathing treatment.
Give it the shake test! Do all the berries fall off when you brush your hand over them?