Armpit (Axillary) Temperature
  An armpit (axillary) temperature is taken by holding the thermometer under your baby's arm. To give a correct reading, this must be done with care. Armpit temperatures are a good screening for a child of any age. But they're not the most accurate way to take your child's temperature. Use the steps on this handout as a guide. 
  
    Getting the thermometer ready
    
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Be sure to use a thermometer that's for armpit use. 
       
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Clean the thermometer before and after each use. 
       
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Make sure the thermometer is at room temperature. 
       
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Remove the cover from the thermometer. 
       
    
   
  
    Positioning your baby
    
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Hold your baby on your lap. Or lay your infant on their back on a firm surface. 
       
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Grasp your baby's elbow. Gently but firmly lift the arm away from baby's side. 
       
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Place the tip of the thermometer in the fold of the armpit. To get a true reading, make sure the thermometer is against your baby's skin on all sides. 
       
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Bring the arm down next to the baby's side. 
       
    
    
   
  
    Taking the temperature
    Follow the instructions for using your digital thermometer. 
    
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Keep your baby's arm against their side. This keeps the thermometer in place. 
       
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When the thermometer beeps, release your hold and gently lift your baby's arm. Remove the thermometer. 
       
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Read the temperature on the digital display. Normal temperature is around 98.6°F (37°C). But it can range from 97.6°F to 99.6°F (36.4°C to 37.6°C). Armpit temperatures can range from 0.5°F to 1°F (0.3°C to 0.6°C) lower than a rectal temperature. 
       
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Before putting the thermometer away, clean it with soap and warm water or alcohol. 
       
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When reporting the temperature to your baby's doctor, tell them that it was an axillary temperature reading. 
       
    
    

   
 
				
			 
			
				
				
				
				
				
						Online Medical Reviewer:
						Sravani Chintapalli
						
					
						
Online Medical Reviewer:
						Stacey Wojcik MBA BSN RN
						
					
						
Online Medical Reviewer:
						Tracy C. Garrett RNC-NIC BSN
						
					
				
			
					Date Last Reviewed:
					6/1/2025
					
				
		
				
				
			
					© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.