Top
40
Doctor insights on: Gram Negative Rods Blood Culture

Share
1

1
What is gram positive rod negative in a blood culture test?

What is gram positive rod negative in a blood culture test?

See below: Gram positive rods are a class of bacteria. The majority of bacteria involved in disease are either gram positive or negative and come in rod, cocci (grapes), or spirals. If the culture says it is gpr negative, then that means no gram positive rods were found. However, it may say other forms were found, including gnr. ...Read more

Dr. Scott Keith
103 Doctors shared insights

Blood Culture (Definition)

Blood cultures refers to taking a sample of blood and growing in the microbiology laboratory for invasive organisms. Typically blood cultures are used for bacteria but can also be used to try and identify fungal organisms in ...Read more


2

2
At the hospital, I had three blood cultures that contained gram-negative rods. What does this mean?

At the hospital, I had three blood cultures that contained gram-negative rods. What does this mean?

Sepsis: It sounds like you had a severe blood infection. Gram negative rods can come from the bowel or from a urinary tract infection. Untreated it could be deadly! It sounds like you are ok now and likely will have no long term problems...Just depends on the details! ...Read more

3

3
What does it mean if gram negative bacilli are found in blood?

What does it mean if gram negative bacilli are found in blood?

How do you FEEL?: If you are super-sick, or have a new heart murmur, we may well have found the cause of your illness and can treat it. If you feel basically okay and the little bugs grow out of only one bottle, I'll bet it's a contaminant. ...Read more

5

5
Gram negative rod blood infection after c-section; where it came from why it happened; do I have organ damage; they treated it 5 days after c-section.

Gram negative rod blood infection after c-section; where it came from why it happened; do I have organ damage; they treated it 5 days after c-section.

Infectious diseases: Blood stream infections by "gram negative rods" are often what we now call "healthcare associated infections" or hai's. Seen in hospitalized patients with indwelling urinary catheters or central venous lines. Patients who are chronically ill or immunosurpressed and those hospitalized for extended periods of time are more susceptible to these infections. ...Read more

6

6
I am in hospital w/a "gram+ bacillus" sepsis. 6/8 blood culture bottles are +. Caused by a dirty cut then severe cellulitis. I have heart vegetation from it they say. Also on CellCept. Can you educate me on what's the significance of heart vegetation?

I am in hospital w/a "gram+ bacillus" sepsis. 6/8 blood culture bottles are +. Caused by a dirty cut then severe cellulitis. I have heart vegetation from it they say. Also on CellCept. Can you educate me on what's the significance of heart vegetation?

Endocarditis.: What you describe is endocarditis. The vegetations harbor the bacteria that are identified when blood cultures are obtained. Sepsis, heart failure as well as "septic emboli" are potential complications 6 weeks of IV antibiotics followed by repeat blood cultures and follow up echocardiogram to insure treatment was adequate. ...Read more

8

8
Can you have osteomylitis in your spine and still have a negative blood culture?

Can you have osteomylitis in your spine and still have a negative blood culture?

Yes: Vertebral osteomyelitis is usually acquired after surgery on the spine or by hematogenous or blood stream spread. The bacteria are only in the bloodstream intermittently so blood cultures can be positive or sterile. Patients with more continuous bacteremia often have underlying heart valve infections, endocarditis. ...Read more

9

9
Hi doctor, my brother blood first report and final report got Negative result. My question is blood culture result should come positive or negative?

Hi doctor, my brother blood first report and final report got Negative result. My question is blood culture result should come positive or negative?

No should on testing: There is no should. The results are either yes or no. When a patient us severely ill, or has sepsis, treatment often starts before culture results are known. It appears there is much more to your story and this app cannot answer anything specific about the situation you are facing. Your concerns should be addressed by the professional responsible for this care there at the hospital. ...Read more

10

10
I am testing a blood culture in normal temperature. (fever investigation) the result is negative. This is a actual result. But fever come in after 2 pm?

I am testing a blood culture in normal temperature. (fever investigation) the result is negative. This is a actual result. But fever come in after 2 pm?

Culture: Could be negative but you could still have infection that is localised hence will not show up in your blood. Hence could still have fever. ...Read more

11

11
Treated for bacteremia, after first week on meds, blood culture was negative. Done with 2nd week of meds, is infection likely gone now?

Bacteremia: More information is needed to accurately answer your question. Treatment duration of bacteremias usually depends on the type, the cause or origin of the bacteremia. Most are usually treated for 2 weeks from the last negative blood culture some may requires 4 weeks or even longer. ...Read more

12

12
Hi doctor, this is sanjana. I have one doubt on blood infection. My brother blood culture report got negative. Is this report indicates blood infection?

Hi doctor, this is sanjana. I have one doubt on blood infection. My brother blood culture report got negative. Is this report indicates blood infection?

Blood culture: A blood culture is done to see if there is an infection in the blood. If it was negative, then no infection in the blood. I hope your brother does well. ...Read more

13

13
Bacteremia- after 1 wk. Rocephin, (ceftriaxone) blood culture neg. Had reaction, so took vanco for 2nd week. Can med change lessen chance of ridding all infection?

Your age?: We need to know your age. Please put it in your public profile. We cannot answer questions from minors. Knowing your country or state helps, too. Age, location, and gender, can affect our answer, since some conditions are more likely in different places or in different age groups. Be honest! You expect if of us, and we expect it of you! ...Read more

14

14
What causes lactic acidosis and life threatening bp drop for 6hours. Icu 2 days. Unknown infection. Blood culture neg. Wbc 16 now 13 1wk later?

What causes lactic acidosis and life threatening bp drop for 6hours. Icu 2 days. Unknown infection. Blood culture neg. Wbc 16 now 13 1wk later?

Lactic acidosis/ BP: Lactic acidosis + BP drop = sepsis or SIRS- systemic inflammatory response. Pain? Age? May be infection-bacteria, aerobic or anerobic, Check urine, CXR, CT for gallbladder, diverticulitis, appendicitis, abscess, pancreatitis, check for autoimmune process- allergic reaction, ischemia, thiamine def, alcohol, DM, meds: metformin, ASA, methanol, ethylene glycol, retroviral, INH, CO. F/u/ w/ doc ...Read more

15

15
Urinalysis negative but culture positive for e.Coli (100, 000 cfu ml) w/cath draw. Blood culture negative. Fever of 104. Why was urinalysis negative?

Urinalysis: Sounds like you may have had upper urinary tract infection without spillage of inflammatory cells into the renal calyx, so that although the bacteria showed up the inflammatory cells did not. The other alternative is that this was somehow a contaminated specimen and the e. Coli were not from the urinary tract. ...Read more

16

16
Recent blood infection, 2nd blood culture neg. After wk. Of meds, sed rate/crp down, cbc ok, no fevers. Normal to feel achy/tired for a while still?

Recent blood infection, 2nd blood culture neg. After wk. Of meds, sed rate/crp down, cbc ok, no fevers. Normal to feel achy/tired for a while still?

You betcha!: Blood infections are very serious. Any serious disease, inc. pneumonia takes a toll on your body. It may take you a month or so, &sometimes longer, to get up to full speed again. Give yourself some slack, and rest, catch up on your trashy novel reading, let others do the housework and chores. Enjoy the downtime to do less strenuous activities that are fun. Being happy & content helps healing. ...Read more

17

17
CT result-Thorax extensive mediastinal lympopathy with central caseating, TB lymphopathy to consider skin, blood culture negative it is TB disease?

CT result-Thorax extensive mediastinal lympopathy with central caseating, TB lymphopathy to consider skin, blood culture negative it is TB disease?

Caseating granulomas: This sounds like tuberculosis, but may conceivably be systemic fungal infection like Histoplasmosis, rarely lymphoma or sarcoidosis. In India this is probably TB and either should be treated empirically or wait for the results of the biopsied lymph nodes. Sounds as if your doctor is very astute and would heed their advice. Best wishes. ...Read more

18

18
What can cause elevated WBC count and fever of 103.9 when chest xray, nose swab, blood culture and ua come back negative in a 4 yr old boy?

What can cause elevated WBC count and fever of 103.9 when chest xray, nose swab, blood culture and ua come back negative in a 4 yr old boy?

Common with virus: Any fever elevation of that amount can double the white count as the normal stress response of the body. It sounds like they have looked for the treatable causes & come up without one. The next step would be watchful waiting to see how the process evolved. Many times you won't know what happened until the process runs its course. There are far to many viruses to have a simple test to prove a cause ...Read more

19

19
Cbc shows lympho 18.4% and esr of 42.have low grade fever sonce 2 weeks with fatigue and body pain. Neg blood culture typhoid ebv and tsh. Which virus?

Cbc shows lympho 18.4% and esr of 42.have low grade fever sonce 2 weeks with fatigue and body pain. Neg blood culture typhoid ebv and tsh. Which virus?

More info needed: The lymphocyte count is normal or close to it (depending to some extent on what your total white blood cell count is). However, 42 is quite a high ESR. The causes you list are possible, but there probably are a hundred other health conditions that could do this. You haven't provided nearly enough information to even guess. Keep working with your doctor. Good luck! ...Read more

20

20
Can you think of any reason why blood cultures would come back with negative results within 2 hours even though antibiotics not commenced until hours after the results have come back.

Unclear question: If the blood culture results were reported within 2 hours, then it could not have bee culture, as that takes at least 24 hours, longer depending on the type of organism and microbial load. It was probably some other test like CRP, not blood culture, that was reported within two hours of blood collection. It may help to talk to the pathologist in-charge of the laboratory. ...Read more

21

21
If a patient has suspected sepsis and urgent blood cultures are attempted then, approximately, how quickly could it be established that the results are negative.

Sepsis: Blood culture often turns positive within 24 hours, however, sometimes it may take longer and other times the blood culture may be negative even though the patient has all the clinical features of sepsis ...Read more

22

22
Blood cultures done for swollen fingers/neck pain. 2 cultures drawn same site. Results " growth of coagulase negative staph" dr. Says contaminated? ?

Second opinion: Any thing is possible. If done by your family physician or specialist ask for another specimen to culture. If truly contaminated then procedure was not done with sterile technique. ...Read more

23

23
I asked a q and told fits endocarditis (murmur, fatigue&splinter haemorrhages).Blood cultures&echo negative. Cud it still be endo or maybe lupus instead?

I asked a q and told fits endocarditis (murmur, fatigue&splinter haemorrhages).Blood cultures&echo negative. Cud it still be endo or maybe lupus instead?

See below: There some organisms that are difficult to culture that cause endocarditis such as hacek organisms. I agree with the recommendation for a tee if you have not had one

however; lupus can present with libman-sack endocardititis but that should be seen on an echo or transesophageal echo. You may need to see both a rheumatologist and cardiologist if you are not already. ...Read more

24

24
Headaches and night fever. Low white count and elevated liver enzymes. Negative for: hepatitis, dengue, malaria, typhoid fever, negative blood cultures?

More info needed: How high a temp?
Any swollen glands?
Any other lab abnormalities?
Any drenching sweats or just light sweating?
Why are you on cipro (ciprofloxacin)?
How low is the wbc? ...Read more

25

25
I have had fever for about 3weeks w/ muscle/joint pain. I have swollen lymph nodes in my neck also. Blood cultures returned negative. Any suggestions?

I have had fever for about 3weeks w/ muscle/joint pain. I have swollen lymph nodes in my neck also. Blood cultures returned negative. Any suggestions?

Supplements to try: Try taking Probonix probiotics 1-2 droppersful 3-4 times/day for a few days. Also take zinc 50 mg/day. If your symptoms do not improve in 3 days, then please consult your primary care physician again; sooner if worse. ...Read more

26

26
Rod positive blood culture after pneumonia. ED said maybe false positive did more blood cultures. Sent me home. Temp is 99. Scared. What to do?

Rod positive blood culture after pneumonia. ED said maybe false positive did more blood cultures. Sent me home. Temp is 99. Scared. What to do?

Probably all is OK: Bacilli ("rods") in blood culture usually are contaminants, i.e. normal skin bacteria, especially "Gram positive" rods. Such bacteria rarely cause pneumonia. Therefore, the ED probably did the right thing by reassuring you, repeating the blood culture, and sending you home -- assuming, of course, you were not seriously ill based on symptoms, fever, etc. Double check w/ your dotor. ...Read more

27

27
Blood culture and how long till results?

Blood culture and how long till results?

2-3 days: Usually bacterial blood cultures take 2 days to grow and the results should be out by 3 days. If they are looking for fungus or viruses on the culture then it could take longer depending on th institution and if the test is being sent to another facility. ...Read more

29

29
How do you get e-coli in a blood culture?

How do you get e-coli in a blood culture?

Multiple ways: A few organisms may show up in blood culture due to transient bacteremia in an otherwise normal person. This may be due passing hard stool. More commonly e coli cause infections in various sites, most commonly, urinary tract, and then invade the blood stream and cause septicemia/sepsis with meaningful growth in blood culture. ...Read more

30

30
Would a blood culture be positive if I had meningitis?

Not always: It depends on how bad the meningitis is, but it helps narrow down the antibiotis if the blood cultures were positive. ...Read more

31

31
Is strep mitis always consider contaminant from blood culture?

Context!: In many cases, yes- but it depends on the situation. If one was to have a single positive blood culture set out of 2 or 3 sets, and the patient is feeling better without interventions, it may be because of a contamination. However, if someone with terrible teeth has a prosthetic device, clinical symptoms, and labs consistent with an infection, then it may actually be a real infection. ...Read more

32

32
What can cause the presence of corynebacterium in a blood culture?

What can cause the presence of corynebacterium in a blood culture?

Can't keep them out: These little creatures live on the skin, and it's not possible to sterilize the venipuncture site perfectly. Usually they mean nothing. One pitfall -- anthrax bacilli mimic corynebacteria if the technician isn't paying VERY close attention. But you'd also be frightfully sick. Hoping the workup continues productive, and best wishes. ...Read more

33

33
What do you suggest if my dr said "no blood culture for 13 year old." why is that?

Hard to say: The proper person to ask is your doctor. S/he is has more information available to decide the propriety od any test, including a blood culture. ...Read more

34

34
? Would a breast blood culture show inflammatory breast csncer?

No: This is not an infectious disease. The possibility is very serious and I would urge you to talk with your physician candidly about the biopsy that may have been performed or may be planned. ...Read more

35

35
What's a blood culture used for?

Bacteria in blood: To find out if there is bacteria in your blood. ...Read more

36

36
Why would you need a blood culture?

Blood infection: If your doctors suspected you had an infection in your blood, blood cultures would be ordered. ...Read more

37

37
How long does it take to get blood culture results?

Depends: Routine blood cultures are usually read at 24 and 48 hours and then again at 7 days and 14 days depending upon the organisms that are growing. Newer "blood culture" results using a variety of methods including dna testing or radioactive metabolite detection can often be read much sooner- in hours. ...Read more

38

38
What is the definition or description of: blood culture?

Blood cultures: Blood cultures refers to taking a sample of blood and growing in the microbiology laboratory for invasive organisms. Typically blood cultures are used for bacteria but can also be used to try and identify fungal organisms in the blood like yeast. ...Read more

39

39
How long does it normally take to get blood culture results back?

How long does it normally take to get blood culture results back?

1-5 days: It can be as soon as one day but labs will usually incubate and monitor the cultures for up to 5 days to make sure nothing is growing. ...Read more