Doctor insights on:
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
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
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 moreSee 1 more doctor answer
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
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
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
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
- Talk to a doctor live online for free
- How long does it normally take for a karyotype result to come back?
- How long does it normally take to get pregnant?
- How long does it normally take to get over cellulitis?
- Ask a doctor a question free online
- How long does it take to get dvla medical results back?
- How long does it take to get results back on tongue biopsy?
- How long does it usually take to get back biopsy results?
- How long does it take to get mammogram results back?
- Talk to a infectious disease specialist online