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Doctor insights on: How Long Does It Normally Take To Get Blood Culture Results Back

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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

Dr. Hirenkumar Italia
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


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How long does it take to get blood culture results?

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

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What exactly is a CSF culture & what is its purpose? Is it difficult to perform and does it take longer than blood cultures for a result to come back?

What exactly is a CSF culture & what is its purpose? Is it difficult to perform and does it take longer than blood cultures for a result to come back?

Similar to blood: A CSF culture is when you take a sample of CSF (usually from a lumbar puncture which samples the CSF from the spinal canal in the lower back - so yes a bit more difficult to perform but still pretty routine) and culture it to see if there are bacteria (or sometimes viruses) growing in it, usually to look for meningitis. It takes the same amount of time as a blood culture (48 hours). ...Read more

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How many days does it take to get blood culture results of a breast abscess?

How many days does it take to get blood culture results of a breast abscess?

Varirs: Ideally the result of a culture would come back in a couple days. In reality the full culture and antibiotic sensitivity may take 5-7 days to come back. Blood cultures results may take longer than direct abscess fluid culture from the breast itself too. ...Read more

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I understand it can take a few days for the results of blood cultures to be known Generally, is it any quicker to get the results of urine cultures?

I understand it can take a few days for the results of blood cultures to be known Generally, is it any quicker to get the results of urine cultures?

May be: Significant bacterial infection of the urinary tract will show up positive in about 24 hours. However additional identification of the organism and antibiotic sensitivity may take another day or two. ...Read more

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Does it normally take 3 days for blood cultures to come back?

Does it normally take 3 days for blood cultures to come back?

It can: Most labs will hold and incubate blood cultures for a full week. Results can come back in a little as a day or two or can take a week. ...Read more

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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

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How fast can infection show up in a blood culture? (I was called back in about 12 hrs to come back in due to positive result)

How fast can infection show up in a blood culture? (I was called back in about 12 hrs to come back in due to positive result)

Under 12h, obviously: Obviously it can show up in under 12 hours; they wouldn't have called you back if the test were not definitely positive. The fast result could suggest a particularly dangerous infection: virulent bacteria often are detected rapidly, and it also may mean large numbers of bacteria in the blood. This could be very serious; get back to the doctor IMMEDIATELY. Good luck! ...Read more

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How long do blood cultures take?

How long do blood cultures take?

24-48 hours: When blood cultures are taken, they are put into a machine that looks for bacteria growing. Most hospitals have machines that constantly are looking for growth. As soon as they turn positive, the machine alerts a technician and the alert goes out to the doctor. Most physicians consider 24-48 hours a reasonable time frame. ...Read more

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How long does blood cultures take?

How long does blood cultures take?

Depends: It depends on the type of organism, how many organisms were present in the blood at the time blood was drawn and if you were administered antibiotics before sample collection. Blood culture can turn positive in less than 24 hours, but the lab may wait up to five days to call it negative. If there is no growth of bacteria. ...Read more

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Does it normally take 5 days for blood cultures to be returned?

Does it normally take 5 days for blood cultures to be returned?

Depends on the: Growth rate and type of organism. Usual bacterial infections of the blood become positive in a couple of days, or sooner. However, the labs hold the blood cultures that do not show growth, for about five days to make sure that slow growing organisms are not missed. ...Read more

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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

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1)How many mins does it take to extract blood for the purpose of growing blood cultures 2)How long does it take to insert a cannula 3) How long does it take to administer IV ceftriaxone 1g by a) quick inj through canulla b) slow drip c) intramuscular?

1)How many mins does it take to extract blood for the purpose of growing blood cultures 2)How long does it take to insert a cannula 3) How long does it take to administer IV ceftriaxone 1g by a) quick inj through canulla b) slow drip c) intramuscular?

Not long: Most of those are very quick. Blood cultures should be drawn from two sites on the body. Unless it is very difficult to find good veins it's 5 minutes or so. The canula takes seconds to insert. We do not rapidly inject into vein, rather add it to saline and give over 30 minutes or so. It can also be given intramuscularly (IM), which also takes seconds. Be warned, IM ceftriaxone really stings ...Read more

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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

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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

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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

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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

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M 50. Lipid, RFT, LFT, blood culture, urine, ultra sou. What other tests should I get for a yearly health check up? Need to see if health is ok. Thnx.

Depends: There is little evidence for the yearly "general medical exam" (GME). Testing should be age and individual appropriate based on evidence based medicine. The duration between evaluations depends on what problems (if any) are present (co-morbidities) and medications. One commentary: <a href="http://www. Emedicinehealth. Com/checkup/article_em. Htm" rel="nofollow" target="_blank">http://www. Emedicinehea ...Read more

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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

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Inflation in knee joints, pain in right ankle, wbc 24000, staphylococcus aureus in blood culture. Back pain also, pain in neck back.

Inflation in knee joints, pain in right ankle, wbc 24000, staphylococcus aureus in blood culture. Back pain also, pain in neck back.

Explanation: You have serous condition what call sepsis and arthritis -knee and ankle, with blood abnormallities typical with this condition. I hope you already started appropriate treatment with antibiotics. Your doctor should explain this to you. ...Read more

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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

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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

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Is it too late to take blood cultures to detect infection once the administration of antibiotics has commenced?

Blood Cultures: Wow, looks like you are very ill right now so I suspect someone else is asking this question. Blood cultures are certainly not as accurate once antibiotics have been started and nothing may grow. Cultures can be done in what are called resin bottles that will help take the antibiotics out and let bacteria grow. I suspect the patient was too ill and antibiotics needed to be started right away. ...Read more

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I use to masturbate a lot, and while at it I put a lot of pressure on my penis, now I can't get my erections. Semen urine n blood cultures r -ve?

I use to masturbate a lot, and while at it I put a lot of pressure on my penis, now I can't get my erections. Semen urine n blood cultures r -ve?

Some ideas: This isn't from having enjoyed yourself while you were alone -- essentially all young men do this. At age 28, erectile dysfunction requires a serious workup by a competent physician. Two entities that are often missed are hemochromatosis and prolactinoma. Your physician knows how to rule these in or out. Best wishes. ...Read more

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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

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How long does it take to get blood test results back?

How long does it take to get blood test results back?

Depends on the type: Of test. Most routine tests are done in less than four hours and reported soon after. Other tests may take 2-4 weeks. ...Read more

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How long does it take to get the results of your yearly blood tests back?

Done the same day: Most routine tests are done by the lab within a few hours, usually less than four, of receiving the specimen. The results are communicated to the ordering physician, who then relays the findings to the patient. A few of the test may take longer to perform but virually all are done within a week. ...Read more

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Please tell me how long it takes for to get results back from a blood test?

Depends: Many standard blood test results are available in the lab's computer access within hours. Some more complicated or reference lab tests can take several days. ...Read more