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EPIC ORDER CODE LAB4118 Mycoplasma genitalium, Transcription-Mediated Amplification, Urine or Urogenital Swab

Additional Codes

SQ: AMGENM

MAYO: AMGEN


Necessary Information


Specimen source is required.



Specimen Required


Submit only 1 of the following specimens:

 

Swab specimen must be collected using an Aptima Collection Unisex Swab or Aptima Collection Multitest Swab. These swabs are contained in the Aptima Collection Kit.

 

Specimen Type: Endocervix/cervix

Supplies: Aptima Unisex Swab Collection Kit (T583)

Container/Tube: Aptima Unisex Swab

Specimen Volume: Swab

Collection Instructions:

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

2. Use cleaning swab (white shaft) to remove excess mucus from endocervix/cervix.

3. Discard the cleaning swab.

4. Insert second swab (blue shaft) 1 to 1.5 cm into endocervical canal and rotate swab gently for 30 seconds. Avoid touching vaginal wall when removing swab.

5. Place the blue shaft swab into transport tube provided in collection kit.

6. Snap off swab at score line so swab fits into closed tube.

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

8. Maintain swab container at 2 to 30° C (refrigerate temperature is preferred) within 60 days of collection. If longer storage is needed, freeze at -20 to -70° C for an additional 90 days.

 

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 is preferred temperature) within 60 days of collection. If longer storage is needed, freeze at -20 to -70° C for an additional 90 days.

 

Specimen Type: Urethra (Male patients only)

Supplies: Aptima Unisex Swab Collection Kit (T583)

Container/Tube: Aptima Unisex Swab

Specimen Volume: Swab

Collection Instructions:

1. Specimens must be collected using the Apitma Unisex Sab Collection Kit.

2. Patient should not have urinated for at least 1 hour prior to collection.

3. With a rotating movement, insert swab (blue shaft) 2 to 4 cm into urethra.

4. Once inserted, rotate swab gently at least 1 full rotation using sufficient pressure to ensure swab comes in contact with all urethral surfaces. Allow swab to remain inserted for 2 to 3 seconds.

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

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

7. Maintain swab container at 2 to 30° C (refrigerate is preferred temperature) within 60 days of collection. If longer storage is needed, freeze at -20 to -70° C for an additional 90 days.

 

Specimen Type: Urine

Supplies: Aptima Urine Transport Tube (T582)

Container/Tube: Aptima Urine Specimen Transport Tube

Specimen Volume: 15 to 20 mL

Collection Instructions:

1. Patient should not have urinated for at least 1 hour prior to specimen collection.

2. Patient should collect first portion of random voided urine (first part of stream) into a sterile, plastic, preservative-free container.

3. Within 24 hours of collection, transfer 2 mL of urine into the Aptima Urine Specimen Transport Tube using the disposable pipette provided. The correct volume of urine has been added when the fluid level is between the black fill lines on the urine transport tube.

4. Place the labels on the transport tube so the black fill lines are still visible for volume confirmation at Mayo Clinic Laboratories.

5. Maintain urine specimen transport container at 2 to 30° C (refrigerate is preferred temperature) within 30 days of collection. If longer storage is needed, freeze at -20 to -70° C up to an additional 90 days.

 

Specimen Type: Penile/meatal

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. Roll the swab (pink shaft) just at the tip or outside the opening to the penis. Be sure to roll the swab completely around the opening to get the best sample.

2. Immediately place the swab into the collection tube.

3. Carefully break the swab shaft at the score line and recap the 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 is preferred temperature) within 60 days of collection. If longer storage is needed, freeze at -20 to -70° C for an additional 90 days.


Forms

If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.

Useful For

Detecting Mycoplasma genitalium in cases of suspected infection

 

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

Method Name

Transcription-Mediated Amplification

Reporting Name

Mycoplasma genitalium, TMA, Varies

Specimen Type

Varies

Specimen Minimum Volume

Urine-first void: 2 mL
Swabs (endocervical, urethral, vaginal, penile/ meatal): 1 swab

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Varies APTIMA VIAL

Reject Due To

Midstream urine specimen
Clean catch urine specimen
Overfilled or underfilled urine transport tubes
Specimen collected into a SurePath Prep device or ThinPrep vial
Transport tubes containing a cleaning swab or more than 1 swab
Reject

Clinical Information

Mycoplasma genitalium, an under-recognized sexually transmitted infection (STI), causes acute and chronic non-gonococcal urethritis, cervicitis, and pelvic inflammatory disease. Due to its growing prevalence, M genitalium was cited as an emerging public health threat by the Centers for Disease Control and Prevention (CDC) in 2015. In high-risk populations, prevalence has been reported as high as 9% to 24% in male patients and 11% to 16% in female patients. M genitalium is commonly misdiagnosed as other STIs (eg, Chlamydia trachomatis or gonorrhea), which can lead to improper treatment of the underlying cause and an increase in duration of infection. In 2021, the CDC updated their STI guidelines to recommend that men with recurrent non-gonococcal urethritis and women with recurrent cervicitis and/or pelvic inflammatory disease should be tested for M genitalium.

Reference Values

Negative

Interpretation

A positive result indicates the presence of nucleic acid from Mycoplasma genitalium and strongly supports the diagnosis of a M genitalium infection.

 

A negative result indicates that nucleic acid from M genitalium was not detected in the specimen.

 

A result of inconclusive indicates that a new specimen should be collected.

 

The predictive value of an assay depends on the prevalence of the disease in a specific population. In settings with a high prevalence of sexually transmitted infections, positive assay results have a high likelihood of being truly positive. In settings with a low prevalence of sexually transmitted infections, or in any setting in which a patient's clinical signs and symptoms or risk factors are inconsistent with urogenital infection, positive results should be carefully assessed, and if appropriate, the patient retested by other methods.

Clinical Reference

Waites KB, Crabb DM, Ratliff AE, Geisler WM, Atkinson TP, Xiao L. Latest advances in laboratory detection of mycoplasma genitalium. J Clin Microbiol. 2023;61(3):e0079021. doi:10.1128/jcm.00790-21

Method Description

The HOLOGIC APTIMA Combo 2 Assay combines the technologies of target capture, transcription-mediated amplification, and dual kinetic assay. The detection of the ribosomal RNA amplification product sequences (amplicon) is achieved using nucleic acid hybridization. Single-stranded chemiluminescent DNA probes are labeled and combined with amplicon to form stable RNA:DNA hybrids. Light emitted from the labeled RNA:DNA hybrids is measured as photon signals in a luminometer.(Package insert: APTIMA Mycoplasma genitalium Assay. AW-17946 Hologic, Inc; Rev 003, 03/2022)

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

87563

LOINC Code Information

Test ID Test Order Name Order LOINC Value
AMGEN Mycoplasma genitalium, TMA, Varies 100706-1

 

Result ID Test Result Name Result LOINC Value
AMGES Specimen Source: 31208-2
616592 Mycoplasma genitalium Result 100706-1