Wood's lamp
Alternative names:
black light test; ultraviolet light test
How the test is performed:
You will be seated, and the lights will be turned off. After your eyes adjust to the darkness, the Wood's lamp is turned on and held 4 to 5 inches from the area being studied. Take care not to look directly into the light.
How to prepare for the test:
It is important not to bathe or shampoo for 24-hours before your test, because porphyrins (a substance found in the suspect organisms) are removed with soap and water.
How the test will feel:
The test involves sitting while your health care provider shines the ultraviolet light over the skin being studied.
Why the test is performed:
Your health care provider may perform this test to detect several conditions, including:
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