Culture, Urine, Prenatal, with GBS Susceptibilities

Test Code

91684

CPT Codes
87086

Includes

If culture is positive, CPT code(s): 87088 (each isolate) will be added with an additional charge.
Identification will be performed at an additional charge (CPT code(s): 87077 or 87140 or 87143 or 87147 or 87149).
Antibiotic susceptibilities are only performed when appropriate (CPT code(s): 87181 or 87184 or 87185 or 87186).
This culture includes susceptibility to Group B Strep if isolated.

Preferred Specimen

4 mL random, clean catch, midstream urine collection in gray-top urine transport tube or UriSponge™ transport

Minimum Volume

Preserved: gray-top transport must be filled to minimum line printed on tube • Completely saturated UriSponge transport • Unpreserved: 0.5 mL urine

Other Acceptable Specimens

Indwelling catheter collected urine • Unpreserved specimens <3 mL or from pediatric patients, or from patients with renal abnormalities are acceptable when placed in a sterile leak-proof container

Instructions

Gray-top tube: Fill to the fill line (4 mL) indicated on the tube label.
UriSponge transport: Dip sponge applicator into the urine sample and submerge for 5 seconds. Remove applicator from the urine sample and return it to UriSponge transport, securing tightly.

Transport Temperature

Preserved: Room temperature
Unpreserved: Refrigerated (cold packs) only

Specimen Stability

Preserved
Room temperature: 48 hours
Refrigerated: 48 hours
Frozen: Unacceptable

Unpreserved
Room temperature: Unacceptable
Refrigerated: 24 hours
Frozen: Unacceptable

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Preserved urine >48 hours old • Unpreserved refrigerated urine >24 hours old • Unpreserved, non-refrigerated urine • Urine tube not filled to minimum fill line • Foley tips • Specimens from catheter bag • Urine in urinalysis transport tube • Requests for anaerobic culture • Expired transport devices • 24-hour urine collections • Swabs • Uricult devices • Inadequately saturated UriSponge • UriSponge transport filled with urine

Methodology
Semi-Quantitative culture techniques and Conventional and/or Rapid Identification methods.
Any isolate of Group B Streptococcus will have susceptibility testing performed.

Setup Schedule

Set up: Daily; Report available: 3 days

Reference Range

See Laboratory Report

Clinical Significance

This culture is designed to quantitate the growth of significant bacteria when collected by the Clean Catch Guidelines or from indwelling catheters. Quantitative culturing of urine is an established tool to differentiate significant bacteriuria from contamination introduced during voiding. This test has a reference range of less than 1,000 bacteria per mL. More than 95% of Urinary Tract Infections (UTI) are attributed to a single organism. Infecting organisms are usually present at greater that 100,000 per mL, but a lower density may be clinically important. In cases of UTI where more than one organism is present, the predominant organism is usually significant and others are probably urethral or collection contaminants. When multiple organisms are isolated from patients with indwelling catheters, UTI is doubtful and colonization likely.
This order code includes full susceptibility testing for isolates of Group B Streptococcus.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.