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Test Code CVRNA Candida Vaginitis, Nucleic Acid Amplification RNA, Vaginal


Necessary Information


 



Specimen Required


Specimen Type: Vaginal

Supplies: Aptima Multitest Swab Collection Kit (T584)

Container/Tube: Aptima Multitest Swab

Specimen Volume: Swab

Collection Instructions:

1. Specimens must be collected using the Aptima Multitest Swab Collection Kit.

2. Insert swab (pink shaft) about 5 cm past introitus and rotate gently for 30 seconds.

3. Place swab into transport tube provided in collection kit. Snap off swab at score line so swab fits into closed tube.

4. Cap tube securely, and label tube with patient's entire name and collection date and time.

5. Maintain swab container at 2 to 30° C (refrigerate temperature is preferred) and transport within 30 days of collection. If longer storage is needed, freeze at -20 to -70° C up to 60 days.


Useful For

Aiding in the diagnosis of Candida vaginitis

 

This test is not intended for use in medico-legal applications.

Method Name

Transcription Mediated Amplification

Reporting Name

Candida vaginitis, Amplified RNA

Specimen Type

Vaginal

Specimen Minimum Volume

See Specimen Required

Specimen Stability Information

Specimen Type Temperature Time Special Container
Vaginal Refrigerated (preferred) 30 days APTIMA VIAL
  Frozen  60 days APTIMA VIAL
  Ambient  30 days APTIMA VIAL

Reject Due To

Incorrect swab
Transport tubes containing more than one swab
Reject

Clinical Information

This test is intended to aid in the diagnosis of vulvovaginal candidiasis from vaginal samples collected from symptomatic individuals. Vaginitis is characterized by a spectrum of signs and symptoms, including vaginal/vulvar irritation, odor, discharge, and pruritus. Vaginitis may develop as a result of mechanical and/or chemical irritants (eg, feminine hygiene products, contraceptive materials), or due to a dysbiosis of the microbiota in the vaginal tract. Up to 90% of vaginitis cases are infectious due to Bacterial vaginosis (BV), vulvovaginal candidiasis (Candida vaginitis, CV) and/or trichomoniasis (Trichomonas vaginalis, TV). BV, CV and TV individually account for 22% to 50%, 17% to 39%, and 4% to 35% of vaginitis cases, respectively.

 

CV, commonly known as a yeast infection, is the second most frequent cause of vaginitis. CV is characterized by an overgrowth of Candida species in the vaginal tract and is associated with development of inflammation, abnormal vaginal discharge, vaginal soreness, pruritus, dyspareunia, and external dysuria. Up to 89% of CV cases are caused by C albicans, while non-albicans species may be responsible for 11%. C glabrata, which is responsible for the majority of non-albicans CV in the U.S., has decreased susceptibility to standard antifungal regiments for CV as compared to C albicans, which is why C glabrata is specifically reported by this assay.

Reference Values

Candida glabrata

Negative

 

Candida species group (C albicans, C tropicalis, C parapsilosis, C dubliniensis)

Negative

Interpretation

Candida species group (C albicans, C tropicalis, C parapsilosis, C dubliniensis):

Positive: Candida albicans, C tropicalis, C parapsilosis and/or C dubliniensis RNA detected. Individual organisms are not identified or reported by this assay. Results should be interpreted alongside clinical presentation. Up to 21% of asymptomatic patients may be positive by this assay.

 

Negative: No RNA detected from Candida albicans, C tropicalis, C parapsilosis or C dubliniensis. A negative result does not exclude infection.

 

Inconclusive: Repeat testing on a new sample is recommended if clinically indicated.

 

Candida glabrata:

Positive: Candida glabrata RNA detected. Results should be interpreted alongside clinical presentation. Up to 9% of asymptomatic patients may be positive for C glabrata this assay.

 

Negative: No RNA detected from Candida glabrata. A negative result does not exclude infection.

 

Inconclusive: Repeat testing on a new sample is recommended if clinically indicated.

Day(s) Performed

Monday through Sunday

Report Available

1 to 4 days

Specimen Retention Time

7 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

87481

LOINC Code Information

Test ID Test Order Name Order LOINC Value
CVRNA Candida vaginitis, Amplified RNA 92703-8

 

Result ID Test Result Name Result LOINC Value
621517 Candida species, Amplified RNA 94422-3
621518 Candida glabrata, Amplified RNA 94421-5