Specialized Testing

Microbiology TAT and Schedule

Microbiology Test Schedule

  1. Routine aerobic cultures are examined after twelve hours incubation. Susceptibilities are routinely performed when indicated and are available within 24 hours of growth depending upon the organism. MICs are available upon request. Anaerobic cultures are looked at daily.
  2. Fungus cultures are examined three times a week and held four weeks before finalizing negatives.
  3. AFB cultures are examined once a week for eight weeks before finalizing negatives. AFB smears are reported out within 24 hours of receipt.
  4. Herpes cultures are reported as final at 48 hours.
  5. Virus cultures are held 10 days before finalizing negatives.
  6. Influenza A, RSV and Rotavirus antigen testings are performed hourly, 7 days a week, during the infective seasons.
  7. For the following tests patients must be scheduled at our Tulsa location
    (800) 722-8077; or (918) 744-2500.
  8. Negative and mixed urine cultures are reported as final at 16-18 hours.
Test:Days:Hours:
Influenza; Rapid A Strep; RSV Monday through Friday 8:00am-12:00pm;
& 1:00pm-6:00pm
Saturday & Sunday 9:00am-12:00pm;
& 3:00pm-6:00pm
Skin Scrapings Monday through Friday 9:00am-4:00pm

Microbiology Turn Around Time

Type of Culture Preliminary Report Final Report
Routine Bacterial Culture (Aerobic) 24 Hours 2 - 5 Days
Anaerobic Culture 48 Hours 4 Days
Fungus Culture 24 - 48 Hours 3 - 4 Weeks
AFB Cultures (Acid Fast Bacilli) 4 Weeks 8 Weeks
Blood Cultures (Bacterial) 24 Hours 3 Days
Blood Cultures (Fungal & AFB) 24 Hours 6 Weeks
Herpes Viral Cultures 24 Hours 48 Hours
Other Viral Cultures 24 - 48 Hours 10 Days
Most all cultures are observed daily. Blood cultures are monitored several times a day. Any growth is preliminarily identified and reported on the day it is found. After positive cultures are reported (routine aerobic bacterial cultures) it then takes another 24 – 48 hours for antibiotic susceptibility testing to be performed. The final report times given here are for cultures that are no growth. Only Gram Stains and KOH preps can be done on a STAT basis and must be requested as such. AFB stains are batched daily and performed at the Tulsa RML site only. These are guidelines, some cultures will fall outside these parameters, but those will be the exceptions.