Test Code LAB2728 Chlamydia Amplification
Additional Codes
CPT Code: 87491
Methodology
This test can only be used to screen genital specimens (cervical, vaginal, urethral, urine and PAP vial). For specimens from other sites, culture or immunofluorescent stain is recommended.
Performing Laboratory and Testing Schedule
TidalHealth Peninsula Regional - Microbiology
Testing is performed Monday, Wednesday and Friday.
Specimens collected on those days must arrive by 0700 to be tested that day.
Schedule is subject to change based on holidays, instrumentation issues, and reagent availability.
Specimen Requirements
Acceptable Specimens: Cervical, vaginal, urethral, urine or PAP vial.
Cervical
Collect specimen as follows:
1. Thin Prep/PreservCyt solution vial or Aptima Unisex Swab Specimen Collection Kit
that has a white label with purple text.
2. Please collect specimen with blue small tipped swab. White swab is for cleaning purposed only.
3. Instructions for collection of specimen are printed on package.
4. Label tube with patient’s name (first and last), date of birth, date and time of collection,
type of specimen, and collector’s initials. Note: Specimen source is required.
5. Testing for Neisseria gonorrhoeae (NGAMP) and Trichomonas (TRICH) can also be
performed on same specimen.
6. Unacceptable specimens: specimens collected on white / large swab, specimens other than gential or
specimens from prepubertal patients.
Vaginal
Collect specimen as follows:
1. Thin Prep/PreservCyt solution vial or Aptima Vaginal Swab Specimen Collection Kit
that has a orange label.
2. Please collect specimen iwth orange swab.
3. Instructions for collection of specimen are printed on package.
4. Label tube with patient's name (first and last), date of birth, date and time of collection,
type of specimen, and collector’s initials. Note: Specimen source is required.
5. Testing for Neisseria gonorrhoeae (NGAMP) and Trichomonas (TRICH) can also be
performed on same specimen.
6. Unacceptable specimens: specimens other than genital or specimens from prepubertal patients.
Urethral – for MALES ONLY
Collect specimen as follows:
1. Urethral specimens must be collected using an Aptima Unisex Swab Specimen Collection Kit
that has a white label with purple text.
2. Instructions for collection of specimen are printed on package.
3. Label tube with patient’s name (first and last), date of birth, date and time of collection,
type of specimen, and collector’s initials. Note: Specimen source is required.
4. Gene Probe for Neisseria gonorrhoeae (NGAMP) testing can also be performed on same specimen.
Urine
Collect specimen as follows:
1. Patient should not have voided for 1 hour prior to specimen collection.
2. The first part of the stream (not midstream) should be collected in a sterile urine cup (20-30 mL).
3. Label tube with patient’s name (first and last), date of birth, date and time of collection,
type of specimen, and collector’s initials.
4. Gene Probe for Neisseria gonorrhoeae (NGAMP) can also be performed on same specimen.
5. Please transport to the lab at 2 to 30° Celsius within 24 hours of collection.
THIN PREP vial
1. Sample collected same as for PAP smear.
2. Label tube with patients's name (first and last) AND date of birth AND date and time of colleciton.
3. Testing for Neisseria gonorhoeae, Trichomonas and HPV can also be performed on the same specimen.
Reference Values
Negative
Critical value (automatic call-back): positive (inpatient)