Chapter 16 - Laboratory Tests

Question 1

Bacterial analyses (!!!)

Answer 1

Samples of skin are examined for presence of microorganisms. Looking for purulent (pus) or fluid.

Question 2

Fungal tests (!!!)

Answer 2

Scrapings from skin lesions, hair specimens, or nail clipping are sent to a laboratory for culture and microscopic examination after treatment with KOH

Question 3

Cryosurgery

Answer 3

Use of subfreezing temperature (liquid nitrogen) to destroy tissue.

Question 4

Curettage

Answer 4

Scrape away skin lesion with a sharp curet (shaped like a spoon or scoop).

Question 5

Electrodessication

Answer 5

Tissue is destroyed by burning with an electric spark

Question 6

Mohs Surgery (!!!)

Answer 6

1. Thin layers of malignant tissue are removed, and each slice is examined under a microscope (basal and squamous cell)
2. Microscopically controlled excision of skin cancers.

Question 7

Skin biopsy (!!!)

Answer 7

1. Suspicious skin lesions are removed or sampled and examined microscopically by a pathologist
2. Punch (rotational cut) and shave (parallel cut) to remove for examination in path lab

Question 8

Skin test (!!!)

Answer 8

1. Substances are injected intradermally or applied to the skin, and results are observed.
2. Test reaction of body to allergen with skin test (scratch or patch test)