Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) by PCR to HCMC, Urine - Safe Child Only


Sunquest Code:CTNGU  
Epic Code:LAB8121Epic Name:CT/NG Urine COC for Safe Child
Synonyms:Gonococcus
Methodology:Transcription mediated amplification technology.
Turnaround Time:Performed Sun-Fri; results are reported within 2-3 days.
Associated Links:

Hennepin Healthcare Lab Chain of Custody Form


Collection Instructions

Specimen:Urine
Container:Aptima Yellow tube
Collection Instructions:
Urine specimen must be collected into a sterile container and transferred to the APTIMA Urine Specimen Transport Tube. Alternatively urine can be sent in a labeled, sterile container if it can arrive in the testing lab within 24 hours of collection.
  1. The patient should not have urinated for at least 1 hour prior to collecting the specimen. Female patients should not cleanse the labial area prior to specimen collection.
  2. Patient should collect first 20-30 mL of the random voided urine (first catch) into a sterile, plastic, preservative-free container. Note: Collection of a larger volume may reduce test sensitivity.
  3. Transfer 2 mL of urine into urine specimen transport tube using the disposable pipet provided within 24 hours of collection. The correct volume of urine has been added when the fluid level is between the black fill lines on the urine transport tube.
  4. Cap securely and label with appropriate patient information.
Causes for Rejection:Midstream and catheterized urine specimens; overfilled or under-filled urine transport tubes; urine collected in grey top tube with preservative.


Processing and Shipping

Specimen Processing:After collection, transport processed urine specimens in the APTIMA urine transport tube at 2°C to 30°C. Processed urine specimens must be assayed within 30 days of collection.
Urine samples in the primary collection container must be transported to the testing lab at 2°C to 30°C. Urine must be transferred to the APTIMA urine specimen transport tube within 24 hours of collection.
Shipping Instructions:After collection, transport processed urine specimens in the APTIMA urine transport tube at 2°C to 30°C. Processed urine specimens must be assayed within 30 days of collection.
Urine samples in the primary collection container must be transported to the testing lab at 2°C to 30°C. Urine must be transferred to the APTIMA urine specimen transport tube within 24 hours of collection.
Specimens should be sent in individual bags to limit the possibility of cross-contamination. Collecting Lab to send STAT directly to HCMC via courier. Chain of Custody Form should be signed at all touch points.
Test Performed at or Referral Lab Lab Sendouts  (Hennepin County Medical Center)
Referral Lab number:LAB0001345


Interpretive

Reference Range:Negative for Chlamydia trachomatis by PCR.
Negative for Neisseria gonorrhoeae by PCR.
Limitations:As is true for all urine test methods, a negative urine result for a female patient who is clinically suspected of having chlamydia or gonococcal infections does not rule out the presence of CT of NG in the urogenital tract. Testing of an endocervical specimen is recommended in such cases.


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