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 Medindia » Blood test »  Microbiology Test »  Gram stain
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Microbiology Test
 

Gram stain
Lab Test
Test Gram stain
Indication Gram stain is a differential stain used to demonstrate the staining properties of bacteria
Physiology Gram positive bacteria retain crystal violet dye after decolorization and appear deep blue. Gram negative bacteria are not capable of retaining the crystal violet dye after decolorization and are counterstained red by safranin dye.
Normal Range Gram Positive/Gram negative
Interpretation Gram stains is also done to detectt the presence or absence of white blood cells and squamous epithelial cells. Gram stain is the most valuable diagnostic test in bacterial meningitis.
Sample Bacterial culture
Test Method Gram staining
Related Tests Fungus smear, Acid fast stain
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Member Comments ( 2 )
What is the range of pH to be maintained in SAGM Solution for storage of Red Blood Cells in blood bank.
(Posted by Dr.N.K.Bhatia, India Date : 8/20/2011 )
How long does it take to get the lab test results?
(Posted by violetbunni, United States Date : 10/13/2009 )


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