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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. Mark Pack
79 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?

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