Orderable Test Codes

Order Name Internal Code
Chlamydia trachomatis/Neisseria gonorrhoeae PCR, Genital Swab LAB8916
Chlamydia trachomatis/Neisseria gonorrhoeae PCR, Genital Cytology LAB8917
Chlamydia trachomatis/Neisseria gonorrhoeae PCR, Respiratory Upper LAB8918
Chlamydia trachomatis/Neisseria gonorrhoeae PCR, Urine LAB8919
Chlamydia trachomatis/Neisseria gonorrhoeae PCR, Rectal LAB8921

CPT Codes

87491, 87591

Synonyms

  • Chlamydia Direct
  • GC PCR
  • Genital, GC Direct
  • Gonorrhea DNA Detection
  • LGV DNA
  • Lymphogranuloma venereum by PCR

Test Includes

Chlamydia trachomatis and Neisseria gonorrhoeae, PCR

Performing Laboratory / Facility

UCLA Healthcare Clinical Laboratory - Brentwood

Performing Section

Microbiology

Availability

Monday through Friday. The specimen must be received in Specimen Processing by 07:00 or it will be processed the next testing day.

Turnaround Time

4 days

Methodology

Real-time PCR

Use

Rapid diagnosis of infections caused by C. trachomatis (e.g., cervicitis, PID, urethritis, nongonococcal urethritis, and sexually transmitted diseases) and N. gonorrhoeae. The sensitivity of the test exceeds that of culture and other nonmolecular assays.

Limitations

This test is not approved for conjunctival and most respiratory specimens, nor can it be used as a test of cure or in cases of suspected sexual abuse. A negative result does not exclude infection.

Additional Information

When a specimen with a positive C. trachomatis and/or Neisseria gonorrhoeae is resulted, LA County Public Health Morbidity Unit requires the completion of a STD Confidential Morbidity Report by both the performing laboratory and the Health Care Provider. The required form and specific instructions are available online at: LA County CMR

Specimen Type

First voided urine. Endocervical, urethral, vaginal, anal/rectal and pharyngeal swabs in Universal Viral Transport. Cervical specimens in Cytyc PreservCyt® (ThinPrep®) or SurePath® liquid cytology media.

Container

Sterile Urine Container
Universal Viral Transport
SurePath
ThinPrep

Collection Instructions

Urine: Collect the first 20-30 mL of voided urine from patients who have not urinated within 1 hour prior to collection. Collect and transport in a sterile urine container.
Endocervical swab: Use the Universal Viral Transport Kit for specimen collection and transport. Remove excess cervical mucus from endocervix before collecting specimen. Insert the swab into the endocervix to sample columnar and squamocolumnar cells and rotate for 15-30 seconds. Place in transport kit.
Urethral swab: Insert the mini tip flocked swab 2 to 4 cm into the urethra and rotate for 2 to 3 seconds. Place swab in Universal Viral Transport.
Note: Do not use swabs on wooden or aluminum shafts, these interfere with assay.

Volume

Collect 20-30 mL of first voided urine. One endocervical, urethral, vaginal, anal/rectal, or pharyngeal swab in Universal Viral Transport.

Minimum Volume

10 mL first voided urine, one swab in Universal Viral Transport, 3 mL Cytyc PreservCyt® (ThinPrep®) or SurePath® liquid cytology media

Storage Temperature

Room temperature

Stability

Specimen type Refrigerated (2 - 8°C) Room Temp (15 - 25°C) Frozen (-20°C) Frozen (≤-70°C)
Urine 7 days 24 hours N/A N/A
Swabs 7 days 7 days N/A N/A
SurePath 1 month 1 month N/A N/A
ThinPrep 1 month 1 month N/A N/A

Special Instructions

Patient must not have urinated within the previous hour. First voided urine specimen is preferred for optimal results. For urine, use a sterile urine container. For endocervical, vaginal, or urethral swabs, use the Universal Viral Transport Kit. Leave swab in transport medium.

Shipping and Handling Instructions

Room temperature

Ambulatory Specimen Processing / Transport

Room temperature

Causes for Rejection

Specimen collected in wrong container; improper storage; leaking specimen; excessive delay in transport.

Reference Range

Chlamydia trachomatis PCR: Not detected
Neisseria gonorrhoeae PCR: Not detected
Test Information

Orderable Test Codes

Order Name Internal Code
Chlamydia trachomatis/Neisseria gonorrhoeae PCR, Genital Swab LAB8916
Chlamydia trachomatis/Neisseria gonorrhoeae PCR, Genital Cytology LAB8917
Chlamydia trachomatis/Neisseria gonorrhoeae PCR, Respiratory Upper LAB8918
Chlamydia trachomatis/Neisseria gonorrhoeae PCR, Urine LAB8919
Chlamydia trachomatis/Neisseria gonorrhoeae PCR, Rectal LAB8921

CPT Codes

87491, 87591

Synonyms

  • Chlamydia Direct
  • GC PCR
  • Genital, GC Direct
  • Gonorrhea DNA Detection
  • LGV DNA
  • Lymphogranuloma venereum by PCR

Test Includes

Chlamydia trachomatis and Neisseria gonorrhoeae, PCR

Performing Laboratory / Facility

UCLA Healthcare Clinical Laboratory - Brentwood

Performing Section

Microbiology

Availability

Monday through Friday. The specimen must be received in Specimen Processing by 07:00 or it will be processed the next testing day.

Turnaround Time

4 days

Methodology

Real-time PCR

Use

Rapid diagnosis of infections caused by C. trachomatis (e.g., cervicitis, PID, urethritis, nongonococcal urethritis, and sexually transmitted diseases) and N. gonorrhoeae. The sensitivity of the test exceeds that of culture and other nonmolecular assays.

Limitations

This test is not approved for conjunctival and most respiratory specimens, nor can it be used as a test of cure or in cases of suspected sexual abuse. A negative result does not exclude infection.

Additional Information

When a specimen with a positive C. trachomatis and/or Neisseria gonorrhoeae is resulted, LA County Public Health Morbidity Unit requires the completion of a STD Confidential Morbidity Report by both the performing laboratory and the Health Care Provider. The required form and specific instructions are available online at: LA County CMR
Specimen Collection and Handling

Specimen Type

First voided urine. Endocervical, urethral, vaginal, anal/rectal and pharyngeal swabs in Universal Viral Transport. Cervical specimens in Cytyc PreservCyt® (ThinPrep®) or SurePath® liquid cytology media.

Container

Sterile Urine Container
Universal Viral Transport
SurePath
ThinPrep

Collection Instructions

Urine: Collect the first 20-30 mL of voided urine from patients who have not urinated within 1 hour prior to collection. Collect and transport in a sterile urine container.
Endocervical swab: Use the Universal Viral Transport Kit for specimen collection and transport. Remove excess cervical mucus from endocervix before collecting specimen. Insert the swab into the endocervix to sample columnar and squamocolumnar cells and rotate for 15-30 seconds. Place in transport kit.
Urethral swab: Insert the mini tip flocked swab 2 to 4 cm into the urethra and rotate for 2 to 3 seconds. Place swab in Universal Viral Transport.
Note: Do not use swabs on wooden or aluminum shafts, these interfere with assay.

Volume

Collect 20-30 mL of first voided urine. One endocervical, urethral, vaginal, anal/rectal, or pharyngeal swab in Universal Viral Transport.

Minimum Volume

10 mL first voided urine, one swab in Universal Viral Transport, 3 mL Cytyc PreservCyt® (ThinPrep®) or SurePath® liquid cytology media

Storage Temperature

Room temperature

Stability

Specimen type Refrigerated (2 - 8°C) Room Temp (15 - 25°C) Frozen (-20°C) Frozen (≤-70°C)
Urine 7 days 24 hours N/A N/A
Swabs 7 days 7 days N/A N/A
SurePath 1 month 1 month N/A N/A
ThinPrep 1 month 1 month N/A N/A

Special Instructions

Patient must not have urinated within the previous hour. First voided urine specimen is preferred for optimal results. For urine, use a sterile urine container. For endocervical, vaginal, or urethral swabs, use the Universal Viral Transport Kit. Leave swab in transport medium.

Shipping and Handling Instructions

Room temperature

Ambulatory Specimen Processing / Transport

Room temperature

Causes for Rejection

Specimen collected in wrong container; improper storage; leaking specimen; excessive delay in transport.
Result Interpretation

Reference Range

Chlamydia trachomatis PCR: Not detected
Neisseria gonorrhoeae PCR: Not detected

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