File:Skin prick testing for allergies.jpg

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Summary[edit]

Summary
Description	A person receiving a skin prick test (SPT). An SPT is performed by using a needle to place a tiny amount of liquid allergen just under the skin of the forearm. SPTs are safe and the results, a raised bump with redness around it (called a wheal and flare), usually appear within 30 minutes. A number of allergens can be tested with an SPT, including ragweed, house dust mite, cat, grass, egg, milk, and peanut. National Institute of Allergy and Infectious Diseases (NIAID)
Source	Wikimedia Commons file page
Author	National Institutes of Health (NIH)
Permission	See original Commons license details.

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Original attribution and file history: Wikimedia Commons

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	12:48, 29 May 2026		2,653 × 2,231 (542 KB)	Maintenance script (talk \| contribs)	== Summary == Importing file

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Metadata

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Image title	Skin prick allergy test
Camera manufacturer	NIKON CORPORATION
Camera model	NIKON D700
Exposure time	1/125 sec (0.008)
F Number	f/18
ISO speed rating	200
Date and time of data generation	11:06, 8 June 2011
Lens focal length	105 mm
Online copyright statement	www.rhodabaerphotography.com
Copyright holder	© Rhoda Baer Photography
Short title	Skin prick allergy test
Orientation	Normal
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Software used	Adobe Photoshop CS4 Macintosh
File change date and time	17:40, 15 June 2011
Exposure Program	Manual
Exif version	2.21
Date and time of digitizing	11:06, 8 June 2011
APEX shutter speed	6.965784
APEX aperture	8.33985
APEX exposure bias	0
Maximum land aperture	3.1 APEX (f/2.93)
Subject distance	1.5 meters
Metering mode	Pattern
Light source	Fine weather
Flash	Flash did not fire
DateTime subseconds	25
DateTimeOriginal subseconds	25
DateTimeDigitized subseconds	25
Color space	Uncalibrated
Sensing method	One-chip color area sensor
File source	Digital still camera
Scene type	A directly photographed image
Custom image processing	Normal process
Exposure mode	Manual exposure
White balance	Manual white balance
Digital zoom ratio	1
Focal length in 35 mm film	105 mm
Scene capture type	Standard
Scene control	None
Contrast	Normal
Saturation	Normal
Sharpness	Normal
Subject distance range	Unknown
Width	2,653 px
Height	2,231 px
Compression scheme	Uncompressed
Pixel composition	RGB
Number of components	3
Image width	2,653 px
Image height	2,231 px
Serial number of camera	2289115
Lens used	105.0 mm f/2.8
Bits per component	8 8 8
Date metadata was last modified	13:40, 15 June 2011
Rating (out of 5)	2
Copyright status	Copyrighted
Unique ID of original document	xmp.did:A7F73C37082068119109EDDB9617D08F
Keywords	Allergy, skin prick test, SPT