Question 1

please tell me can gram-negative bacteria test be positive in a catalase test, even if catalase tests are meant for gram-positive bacteria?

Accepted Answer

Catalase enzyme: Yes -many, many bacteria possess catalase. Classically the catalase test was used to distinguish Staph (+) from Strep (-), but there is a long list of bacteria that have it... includin Listeria, C diphtheriae, Burkholderia cepacia, Nocardia, the family Enterobacteriaceae (Citrobacter, E. coli, Enterobacter, Klebsiella, Shigella, Yersinia, Proteus, Salmonella, Serratia), Pseudomonas etc.

Question 2

does penicillin work for gram negative bacteria?

Accepted Answer

: No. It works against gram positive one.
Visit this site for more info: https://manoa.hawaii.edu/exploringourfluidearth/biological/aquatic-plants-and-algae/structure-and-function/weird-science-penicillin-and-cell-wall#:~:text=Gram%2Dnegative%20bacteria%20have%20peptidoglycan,the%20cells%20leaky%20and%20fragile.

Question 3

how would a doctor treat gram positive bacteria and a gram negative bacteria?

Accepted Answer

Infection: You treat the causative bacteria of infection with antibiotics that may be chosen after isolating the particular bacteria and testing to see if it is sensitive to being killed by that antibiotic.

Question 4

would bacitracin, novobiocin, and optochin susceptibility tests be effective tests for gram negative bacteria?

Accepted Answer

Sensitivity test: Yes. But the proof is in the giving of them to the patient.

Question 5

is necrotising fasciitis caused by gram negative or gram positive bacteria?

Accepted Answer

Both: Necrotising fasciitis is usually caused by a combination of multiple bacteria that support each others growth and spread and causing serious tissue damage.

Question 6

peace doctors, is gram-negative bacteria that infect the intestinal wall dangerous?

Accepted Answer

: To get the most from this site you need to provide detailed background information followed by a clear related question. Your question is without context. Gram negative bacteria are common in the digestive tract, some benign and some not. Infections can be minor or life threatening. You are welcome to start over and provide the reason behind your question.

Question 7

i have rare e cells, few m. threads, and rare bacteria in my urinalysis. for my penile swab i had rare gram negative bacilli in singles, pairs, chains. i also had rare gram negative cocci in pairs, singles, chains. is this all normal or concerning?

Accepted Answer

: Quite a lot of findings. Unless you have symptoms the urine- results not abnormal same for for the penileswab

Question 8

generally speaking, do gram positive or gram-negative bacteria cause prostatits/epidymitis infections. generally speaking based off your experience.

Accepted Answer

Both: Both Gram positive and Gram-negative bacteria can cause prostatits/epidymitis. 
But most often they are caused by gram negatives.

Question 9

my urine test came back with gram negative bacilli greater than 100,000? is it good im being treated for uti? does stool cause this bacteria or is that mainly e coli? thank you. im on cefdinir for 5 days?

Accepted Answer

: A urine test showing the presence of bacteria is the very definition of a UTI (urinary tract infection), so yes, it is good that you are being treated with Cefdinir.  The most common gram-negative bacteria in UTIs is E. Coli, but other stool bacteria can cause them as well.

Question 10

less 10,000 cfu/ml gram negative rods on urine culture.  symptoms urge to pee constantly, blood in urine and painful. i had also taken two macrobid before the culture,  could this result in lower bacteria?

Accepted Answer

: Yes it could.

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Doctor answers about:

Identification gram negative bacteria

A member asked:

Please tell me can gram-negative bacteria test be positive in a catalase test, even if catalase tests are meant for gram-positive bacteria?

A member asked:

Does penicillin work for gram negative bacteria?

A member asked:

How would a doctor treat gram positive bacteria and a gram negative bacteria?

A member asked:

Would bacitracin, novobiocin, and optochin susceptibility tests be effective tests for gram negative bacteria?

A member asked:

Is necrotising fasciitis caused by gram negative or gram positive bacteria?

A member asked:

Peace doctors, is gram-negative bacteria that infect the intestinal wall dangerous?

A member asked:

I have rare e cells, few m. threads, and rare bacteria in my urinalysis. for my penile swab i had rare gram negative bacilli in singles, pairs, chains. i also had rare gram negative cocci in pairs, singles, chains. is this all normal or concerning?

A member asked:

Generally speaking, do gram positive or gram-negative bacteria cause prostatits/epidymitis infections. generally speaking based off your experience.

A member asked:

My urine test came back with gram negative bacilli greater than 100,000? is it good im being treated for uti? does stool cause this bacteria or is that mainly e coli? thank you. im on cefdinir for 5 days?

A member asked:

Less 10,000 cfu/ml gram negative rods on urine culture. symptoms urge to pee constantly, blood in urine and painful. i had also taken two macrobid before the culture, could this result in lower bacteria?

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