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Positive fern test with amniotic fluid as seen under the microscope. The fern test is a medical laboratory test used in obstetrics and gynecology.The name refers to the detection of a characteristic "fern like" pattern of vaginal secretions when a specimen is allowed to dry on a glass slide and is viewed under a low-power microscope.
Fern test: A sterile cotton swab is used to collect fluid from the vagina and place it on a microscope slide. After drying, amniotic fluid will form a crystallization pattern called arborization [11] which resembles leaves of a fern plant when viewed under a microscope. [8] Fibronectin and alpha-fetoprotein blood tests
Nitrazine paper test; Fern test; Amniotic fluid index; For results to be roughly 90% accurate in infection detection, a combination of both an arborization test and nitrazine paper test may be used. [11] An arborization test assesses the patient's vaginal secretions, while a nitrazone paper test uses the nitrazine paper to examines vaginal pH.
The test is easily performed and is usually painless. A specimen is collected from the patient using a vaginal swab. The swab is placed in a transport tube and sent to a laboratory for testing. Most labs can easily produce a result in less than one hour.
The postcoital test (PCT), also known as the Sims test, Hühner test ,Sims–Hühner test, or cervical mucous penetration assay is a test in the evaluation of infertility. The test examines interaction between sperm and mucus of the cervix .
This list, containing 488 cell lines, was last updated on 1 December 2016. [c] Cellosaurus also is maintaining a list of "problematic" cell lines. [6] The list is dynamically generated from all cell lines in the database with a comment containing the dedicated words "Problematic cell line". As of 17 January 2017, the list contains 757 entries.
Breakdown of a charged specimen may also be manually triggered by poking the plastic with a pointed conductive object to create a point of excessive voltage stress. During the discharge, the powerful electric sparks leave thousands of branching chains of fractures behind, creating a permanent Lichtenberg figure inside the specimen. Although the ...
The second is within the nuclei of the epidermal cells (anti-nuclear antibodies). Immunofluorescence is employed in foundational scientific investigations and clinical diagnostic endeavors, showcasing its multifaceted utility across diverse substrates, including tissue sections, cultured cell lines, or individual cells.