Gynecologic Pap Test (IG) + Chlamydia/Gonococcus/Trichomonas + HSV Types 1 and 2

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Category:

Turnaround Time: 3-8 Days
CPT Code:

87491; 87529(x2); 87591; 87661; 88175

Reference Range:

Negative for intraepithelial lesion or malignancy.

Overview:

Diagnose primary or metastatic neoplasm; detect Chlamydia trachomatis, Neisseria gonorrhoeae, and Trichomonas vaginalis; detect and type active HSV shedding.

Failure to obtain adequate ectocervical, endocervical, or vaginal cell population is suboptimal for evaluation. Excessive use of lubricating jelly on the vaginal speculum will interfere with cytologic examination and may lead to unsatisfactory Pap results.

Testing for Chlamydia trachomatis, Neisseria gonorrhoeae, and Trichomonas vaginalis requires special procedures to be used in the processing of the cytology specimens; therefore, testing for these organisms cannot be added on after the specimen has been submitted. The liquid-based cytology specimen must be processed for Chlamydia trachomatis, Neisseria gonorrhoeae, and Trichomonas vaginalis testing. Any time a transport device used for molecular testing is processed, the chance of cross-specimen contamination increases. Aptima® transports can be placed directly on the analyzer, limiting the possibility of cross-specimen contamination.

This test is intended for use as an aid in the diagnosis of herpes simplex virus (HSV) infections with active viral shedding; it also differentiates HSV-1 from HSV-2. Negative HSV NAA results indicate lack of viral shedding but do not confirm absence of previous infection.

Centers for Disease Control and Prevention. Screening test to detect Chlamydia trachomatis and Neisseria gonorrhoeae−2002. MMWR. 2002; 51(RR15). PubMed 12418541

Hutchinson ML, Cassin CM, Ball HG 3rd. The efficacy of an automated preparation device for cervical cytology. Am J Clin Pathol. 1991 Sep; 96(3):300-305. PubMed 1877527

Hutchinson ML, Isenstein LM, Goodman A, et al, Homogeneous sampling accounts for the increased diagnostic accuracy using the ThinPrep® Processor. Am J Clin Pathol. 1994 Feb; 101(2):215-219. PubMed 8116578

Joseph MG, Cragg F, Wright VC, Kontozoglou TE, Downing P, Marks FR. Cyto-histological correlates in a colposcopic clinic: A 1-year prospective study. Diagn Cytopathol. 1991; 7(5):477-481. PubMed 1954825

van Der Schee C, van Belkum A, Zwijgers L, et al. Improved diagnosis of Trichomonas vaginalis infection by PCR using vaginal swabs and urine specimens compared to diagnosis by wet mount microscopy, culture, and fluorescent staining. J Clin Microbiol. 1999; 37(12):4127-4130. PubMed 4562134

Wilbur DC, Cibas ES, Merritt S, James LP, Berger BM, Bonfiglio TA. ThinPrep® Processor. Clinical trials demonstrate an increased detection rate of abnormal cervical cytologic specimens. Am J Clin Pathol. 1994 Feb; 101(2):209-214. PubMed 8116577

Collection Details:

Patient Preparation:

Patient should avoid douches 48 to 72 hours prior to examination. Specimen should not be collected during or shortly after menstrual period.

Collection Instructions:

Include date of birth, Social Security number (or other identification number), previous malignancy, drug therapy, radiation therapy, last menstrual period (LMP), postmenopausal patient (PMP), surgery (including surgical biopsies), exogenous hormones, abnormal vaginal bleeding, abnormal Pap results, IUD, and all other pertinent clinical information on the cytology test request form.

Note: In accordance with criteria established by CLIA, Pap smears will be referred for pathologist review if laboratory personnel suspect:

• Reactive or reparative cellular changes

• Atypical squamous or glandular cells of undetermined significance

• Cells in the premalignant or malignant category

In these cases, LabCorp will charge for the associated service. (Slides that are routinely reviewed by a pathologist for quality control purposes are not included.)

HSV NAA is a single test that both detects the presence of HSV DNA and determines which type is present in the positive samples. There is no mechanism, therefore, for testing for HSV-1 without simultaneously testing for HSV-2.

ThinPrep® vial or SurePath™ vial or ThinPrep® vial or SurePath™ vial and Aptima® swab collection kit (for Chlamydia/Gonococcus/Trichomonas).

ThinPrep® Vial − Broom or Brush/Spatula:

Broom-like collection technique: Obtain a sample from the cervix using a broom-like device by inserting the brush portion into the cervical os and rotate the brush five times. Rinse the collection device in the PreservCyt® solution by pushing the brush into the bottom of the vial 10 times, forcing the bristles to bend apart to release the cervical material. As a final step, twirl the brush between the thumb and forefinger vigorously to release additional cellular material. Discard the collection device. Tighten the cap on the ThinPrep® vial so that the torque line on the cap passes the torque line on the vial.

Brush/spatula technique: Insert the brush into the endocervical canal until only the bottommost fibers are exposed. Slowly rotate the brush 1/4 to 1/2 turn in one direction. Do not over-rotate the brush. Then, rotate the brush in the PreservCyt® solution 10 times while pushing against the wall of the ThinPrep® vial. Swirl the brush vigorously to release additional material. Discard the brush. Obtain an adequate sample from the ectocervix using a plastic spatula. Swirl vigorously in the ThinPrep® vial 10 times and discard the spatula. Tighten the cap on the ThinPrep® container so that the torque line on the cap passes the torque line on the vial.

SurePath™ Vial: When using the SurePath™ vial, the cervical broom must be used for specimen collection. Insert the broom into the cervical os and rotate five times. Place the broom head into the CytoRich™ preservative fluid in the SurePath™ collection vial. Tightly cap the vial.

Optional Dedicated Specimen for Chlamydia, Gonococcus, and Trichomonas: Use the Gen-Probe® Aptima® swab collection kit. (Note: Do not use the Gen-Probe® PACE DNA probe collection kit.) Clean the cervix using the larger, white-shafted swab supplied in the Gen-Probe® Aptima® swab collection kit and discard. Insert the smaller, blue-shafted swab into the cervix and rotate for 10 to 30 seconds to ensure good sampling. Carefully withdraw the blue-shafted swab, avoiding contact with the vaginal mucosa. Remove the cap from the swab specimen transport tube and immediately place the specimen collection swab into the transport tube. Break the swab shaft at the scoreline, using care to avoid splashing contents. Recap the swab specimen transport tube tightly.

Maintain liquid-based cytology and Aptima® swab transport specimens at room temperature. Pap processing must be performed within 21 days of collection. Liquid-based cytology specimens must be tested within seven days for Chlamydia/Gonococcus/Trichomonas and HSV; if the Aptima® swab transport is used it must be tested within 60 days.