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In dermatopathology, the Tzanck test, also Tzanck smear, is scraping of an ulcer base to look for Tzanck cells. It is sometimes also called the chickenpox skin test and the herpes skin test. It is a simple, low-cost, and rapid office based test. [1] Tzanck cells (acantholytic cells) are found in: Herpes simplex [2] Varicella and herpes zoster
Cytopathologic tests are sometimes called smear tests because the samples may be smeared across a glass microscope slide [4] for subsequent staining and microscopic examination. However, cytology samples may be prepared in other ways, including cytocentrifugation. Different types of smear tests may also be used for cancer diagnosis.
[1] [2] [3] The Papanicolaou stain is one of the most widely used stains in cytology, [1] where it is used to aid pathologists in making a diagnosis. Although most notable for its use in the detection of cervical cancer in the Pap test or Pap smear, it is also used to stain non- gynecological specimen preparations from a variety of bodily ...
A Candida yeast infection can also be identified by a KOH test by taking scrapings from the mouth (oral thrush), vagina and skin (candidiasis). There are over 40 different fungus species known to cause disease in humans, of which Candida albicans is the most common and most frequently tested for.
PAS diastase showing the fungus Histoplasma. [ 13 ] Periodic acid-Schiff is a histology special stain used to mark carbohydrates ( glycogen , glycoprotein , proteoglycans ). PAS is commonly used on liver tissue where glycogen deposits are made which is done in efforts to distinguish different types of glycogen storage diseases.
Skin scratch test: a deep dermic scratch is performed with help of the blunt bottom of a lancet. [3] Intradermic test: a tiny quantity of allergen is injected under the dermis with a hypodermic syringe. Skin scrape Test: a superficial scrape is performed with help of the back of a needle to remove the superficial layer of the epidermis. [4]
A positive reaction of Schaeffer's test, which uses the reaction of aniline and nitric acid on the surface of the mushroom, is indicated by an orange to red color; it is characteristic of species in the section Flavescentes. The compounds responsible for the reaction were named schaefferal A and B to honor Schäffer.
The Papanicolaou test (abbreviated as Pap test, also known as Pap smear (AE), [1] cervical smear (BE), cervical screening (BE), [2] or smear test (BE)) is a method of cervical screening used to detect potentially precancerous and cancerous processes in the cervix (opening of the uterus or womb) or, more rarely, anus (in both men and women). [3]