0
If you use one that isn't sterile, you will not know where the bacteria are from. The swab or the area you swabbed.
Wiki User
∙ 8y ago
Add your answer:
Earn +20 pts
How are urethral specimens collected?
The physician inserts a sterile, cotton-tipped swab into the urethra.
How are vaginal specimens collected?
The physician inserts a sterile, cotton-tipped swab into the vagina.
Why is a sterile swab used to collect bacteria in the mouth?
because it is important that in nutrient media to grow up only bacteria that may be present in your mouth.In tha case tha swabs are not sterile in nutrient media will growth mouth and swab bacteria and the will give a flas positive result.
With what do you swab bacteria onto a petri dish?
We can not swab bacteria directly on to a petridish its because swab's front part contain cotton which may damage the evenness of the agar in petridish so its better to draw the bacteria from swab to a broth after 24 hours if it is innoculated on to petridish with sterile loop we can grow the bacteria
Why swab the inside of cheeks to obtain DNA?
Because it scrapes off dead cells
How do you obtain DNA?
A DNA swab is the most common method of collection of DNA. The swab is swiped inside the cheek to collect epithelial cells and placed in a sterile tube until tested.
Which type of swab used for cleaning validation?
sterile cotton swab
What is the preparation for a skin culture?
After cleaning the infected area with sterile saline and alcohol, the physician collects skin cells, pus, or fluid using a needle or swab. If necessary, the physician will open a lesion to collect the specimen.
What is the procedure for taking a rectal swab?
Insert rectal swab past anal sphincter, rotate one full turn, withdraw and place in specimen container.
How are vaginal specimens collected?
The physician inserts a sterile, cotton-tipped swab into the vagina.
How are urethral specimens collected?
The physician inserts a sterile, cotton-tipped swab into the urethra.
Do you put swab into sterile for DNA test?
The swab used in cheek swab DNA testing is already sterile and ready for testing when you purchase it. They are designed for single use so only use it on the person being tested. If multiple people are being tested, use the multiple swabs included in the home DNA kit. Lastly, don't drop the swab. Contamination from dropping the swab could definitely affect the accuracy of the test results.
How can a DNA mouth swab test be messed up?
There is always a way to mess up a test, most would be caused by human error. This could be due to using a swab to obtain cheek cells and thereby DNA not being sterile. If the swab is not sterile then it could have DNA on it from unknown sources all the way back to the person at the factory that made said swab. Additionally, if the person taking the sample is not careful he/she could contaminate it with their own DNA or DNA present in the environment before or after sampling. Of course the test could be messed up simply because the DNA amplification was performed incorrectly or insufficient starting material was obtained.
Why is a sterile swab used to collect bacteria in the mouth?
because it is important that in nutrient media to grow up only bacteria that may be present in your mouth.In tha case tha swabs are not sterile in nutrient media will growth mouth and swab bacteria and the will give a flas positive result.
With what do you swab bacteria onto a petri dish?
We can not swab bacteria directly on to a petridish its because swab's front part contain cotton which may damage the evenness of the agar in petridish so its better to draw the bacteria from swab to a broth after 24 hours if it is innoculated on to petridish with sterile loop we can grow the bacteria
What is one of the main techniques for performing cryotherapy?
the physician will dip a cotton swab or other applicator into a cup containing a "cryogen," such as liquid nitrogen, and apply it directly to the skin growth to freeze it.
Why is first drop of blood wiped away from the capillary puncture site?
It is contaminated from the alcohol swab.
