Test Overview

Test Methodology


Test Usage

Isolate and identify potentially pathogenic organisms.

Reference Range*

No growth

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Consult Pediatric Infectious Diseases (763-2440) or Adult Infectious Diseases (936-5205) for interpretation (call MLabs office and ask for appropriate department). Isolator tubes will not isolate anaerobes.

Test Details

Days Test Performed


Analytic Time

Preliminary results are reported in 24 hours. Negative cultures are reported in 5 days for routine blood cultures. The health care provider will be notified of initial positive smears and cultures.

Soft Order Code


MiChart Code

Quantitative Blood Culture, Pediatric



Looking to Order a Test?

We’ve provided helpful links to make ordering easy.

Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Specimen Requirements

Offsite Collection Instructions

Draw two Isolators, one from the catheter line to be monitored and one from a peripheral site. Mix Isolator contents well to lyse blood cells and prevent clotting. DO NOT refrigerate or incubate. For optimum recovery, send immediately or store Isolator at room temperature and transport within 4 hrs. A maximum of 3 blood cultures will be accepted within a 24 hr period. Label tube with anatomic site if more than one culture is drawn at one time. Indicate specimen source, collection date/time, current antibiotic therapy, and clinical diagnosis. If an unacceptable specimen is received, the client will be notified before disposal of the original specimen. . Specimen Collection: Clean venipuncture site with soap and water if soiled. Wipe with 70% alcohol and allow to dry. Place swab containing an iodoform solution on the venipuncture site and apply in overlapping circles working from the center to the periphery to obtain a diameter of 4 inches. Allow to dry 2 minutes before performing venipuncture. DO NOT palpate venipuncture site after preparation. If patient is sensitive to iodine, alcohol alone may be used. Draw required amount of blood into syringe and transfer to isolator tube.

Normal Volume

6-10 mL in an adult Isolator tube

Minimum Volume

0.5-1.5 mL in a pediatric Isolator tube

Additional Information

Test includes quantitative colony counts to evaluate status of the catheter line. Colonies/mL from blood drawn through a catheter line (such as Broviac) are compared to colonies/mL from peripheral blood. See Blood Culture, Bacteria and Yeast for additional information on routine blood cultures. Test includes susceptibility testing of potentially pathogenic organism(s) at an additional charge unless specifically declined.

Billing Information

Fee Codes

CPT Code


Have More Billing Questions?

Explore our helpful billing resources:

Billing Resources

Billing FAQ