Coagulase test: Difference between revisions

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**Positive if clumping is apparent within 10 seconds or less, and no clumping is observed in saline or water
 
**Positive if clumping is apparent within 10 seconds or less, and no clumping is observed in saline or water
 
**A few species of [[coagulase-negative staphylococci]] may be positive due to membrane-bound clumping factor
 
**A few species of [[coagulase-negative staphylococci]] may be positive due to membrane-bound clumping factor
***[[Staphylococcus lugdenensis]], [[Staphylococcus schleiferi]] subsp. ''schleiferi'', [[Staphylococcus sciuri]] subsp. ''carnaticus'', [[Staphylococcus sciuri]] subsp. ''rodentium'', and [[Staphylococcus intermedius]]
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***[[Staphylococcus lugdenensis]], [[Staphylococcus schleiferi]] subsp. ''schleiferi'', [[Staphylococcus sciuri]] subsp. ''carnaticus'', and [[Staphylococcus sciuri]] subsp. ''rodentium''
 
**[[Staphylococcus aureus]] is negative in 15% of tests, especially MRSA, so negative results need to be confirmed with tube coagulase
 
**[[Staphylococcus aureus]] is negative in 15% of tests, especially MRSA, so negative results need to be confirmed with tube coagulase
 
*'''Tube coagulase'''
 
*'''Tube coagulase'''

Revision as of 18:31, 23 August 2020