Chlamydia trachomatis amplified probe-6744

Test info

  
Chlamydia trachomatis amplified probe
  
6744
  
87491.0
  
CHP
  

Test-of-cure

Test-of-cure should be performed no earlier then three (3) weeks after treatment.

Specimen

  

Urine collections:

  • Patient should not have urinated for at least 1 hour prior to specimen collection.
  • Female patients should not cleanse labial area prior to providing the specimen.
  
Swab: Oral/mouth, rectal, or vaginal
  
  

The following instructions are provided on the kit packages.

Female vaginal specimens

Option when a pelvic exam is not otherwise indicated for clinician or patient-collected specimen. Not for home use. Patient collection is limited to health care facilities where support/counseling is available to explain procedures and precautions.

  1. Partially peel open the swab package and remove the swab. Do not touch the soft tip or lay the swab down. If the soft tip is touched, the swab is laid down, or the swab is dropped, use a new collection kit.
  2. Hold the swab, placing your thumb and forefinger in the middle of the swab shaft covering the score line. Do not hold the swab shaft below the score line.
  3. Carefully insert the swab into the vagina about 2 inches past the introitus and gently rotate the swab for 10 to 30 seconds. Make sure the swab touches the walls of the vagina so that moisture is absorbed by the swab and then withdraw the swab without touching the skin.
  4. While holding the swab in the same hand, unscrew the cap from the tube, taking care not to spill the contents of the tube. If the contents of the tube are spilled, use a new collection kit.
  5. Immediately place the swab into the transport tube so that the score line is at the top of the tube.
  6. Carefully break the swab shaft at the score line against the side of the tube.
  7. Immediately discard the top portion of the swab shaft.
  8. Tightly screw the cap onto the tube.

Rectal Specimens:

  1. Partially peel open the swab package. Remove the swab. Do not touch the soft tip or lay the swab down. If the soft tip is touched, the swab is laid down, or the swab is dropped, use a new Aptima Multitest Swab Specimen Collection Kit.
  2. Hold the swab, placing your thumb and forefinger in the middle of the swab shaft covering the score line. Do not hold the swab shaft below the score line.
  3. Carefully insert the swab into the rectum about 1-2 inches (3-5 cm) past the anal margin and gently rotate the swab for 5 to 10 seconds. Withdraw the swab without touching the skin.
  4. While holding the swab in the same hand, unscrew the cap from the tube. Do not spill the contents of the tube. If the contents of the tube are spilled, use a new Aptima Multitest Swab Specimen Collection Kit.
  5. Immediately place the swab into the transport tube so that the score line is at the top of the tube.
  6. Carefully break the swab shaft at the score line against the side of the tube.
  7. Immediately discard the top portion of the swab shaft.
  8. Tightly screw the cap onto the tube.

Oral Specimens:

  1. Partially peel open the swab package. Remove the swab. Do not touch the soft tip or lay the swab down. If the soft tip is touched, the swab is laid down, or the swab is dropped, use a new Aptima Multitest Swab Specimen Collection Kit.
  2. Hold the swab, placing your thumb and forefinger in the middle of the swab shaft covering the score line. Do not hold the swab shaft below the score line.
  3. Carefully insert the swab into the throat ensuring contact with bilateral tonsils (if present) and the posterior pharyngeal wall, then withdraw the swab without touching the inside of the cheeks or tongue.
  4. While holding the swab in the same hand, unscrew the cap from the tube. Do not spill the contents of the tube. If the contents of the tube are spilled, use a new Aptima Multitest Swab Specimen Collection Kit.
  5. Immediately place the swab into the transport tube so that the score line is at the top of the tube.
  6. Carefully break the swab shaft at the score line against the side of the tube.
  7. Immediately discard the top portion of the swab shaft.
  8. Tightly screw the cap onto the tube.
  

Aptima Multitest swab collection kit

For oral/mouth, rectal or vaginal sample collection

  
Urine, voided (Female/Male)
  
  

Direct patient to provide first-catch urine (approximately 20 to 30mL of initial urine stream) into urine collection cup free of any preservatives.

  • The cup should be removed from the urine stream when 20-30 mL of urine is in the cup. Collection of larger volumes of urine may result in specimen dilution that may reduce test sensitivity and should not be sent for testing.
  

Urine specimens must be transferred to an Aptima specimen transport tube by the collecting site, within 24 hours of collection, and prior to specimen transport.

  1. Remove cap from urine specimen transport tube and transfer 2mL of urine into urine specimen transport tube using disposable pipette provided. The correct volume of urine has been added when fluid level is between black fill lines on urine specimen transport tube label.
  2. If refrigerated, urine may be transferred to the transport tube at the collection site within 24 hours.
  3. Tightly screw the cap onto the tube.
  
  

Swab:

Ambient (preferred) - 60 days

Refrigerated - 60 days

Frozen - NO

 

Urine: 

Ambient (preferred) - 30 days

Refrigerated - 30 days

Frozen - NO

  
One (1) week.
Trichomonas may be added to female specimens.
  
  • Improper label (unlabeled or mislabeled)
  • Time delay between time of collection and receipt of specimen
  • Improper transport container
  • Improper transport temperature
  • Interfering substances
  • Inappropriate specimen type
  • No swab, white swab, or two swabs in Aptima swab transport tube
  • Pink-shafted swab for cervical source
  • Blue-shafted swab for vaginal, oral or rectal source
  • Collection from vaginal cuff source
  • Midstream or Clean Catch Urine.
  • Urine collected for chemistry testing or cultures cannot be used for GC or Chlamydia PCR testing
  • Urine transport tube not filled to “Fill area” (above or below – rejected)
  • Urine not in Aptima transport tube
    • Client may transfer urine to transport tube within 24 hr. of collection.
    • Due to nucleic acid cross-contamination issues, this must be done at the client site and will not be done at Allina Health Laboratory.
  • Frozen specimens
  • Sources other than oral, rectal, vaginal, or voided urine
  • Leaking container

Performance

  
AHL - Microbiology: M
  
Daily
  
1 - 3 days
  

Target capture with transcription mediated amplification

Clinical and Interpretive info

  

Negative

  

 

Chlamydia trachomatis probe versus patient infected status

Specimen

Sensitivity (%)

Specificity (%)

Female urine

94.7

98.9

Female vaginal swab

97.2

94.9

Male urine

97.9

98.5

Overall

95.9

98.2

Billing

  
87491
  
Yes
  

Medical necessity

Tracking

  
09/08/2005
  
07/01/2025
  
12/18/2023