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HelpTest Code LAB0231720 Metamycoplasma hominis, Molecular Detection, PCR, Varies
Additional Codes
| Mayo Test ID |
|---|
| MHRP |
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Rapid, sensitive, and specific identification of Metamycoplasma hominis from synovial fluid, genitourinary, reproductive, lower respiratory sources, pleural/chest fluid, pericardial fluid, and wound specimens
This test is not intended for medicolegal use.
Testing Algorithm
For more information see Infective Endocarditis: Diagnostic Testing for Identification of Microbiological Etiology
Special Instructions
Method Name
Real-Time Polymerase Chain Reaction (PCR) using LightCycler and Fluorescent Resonance Energy Transfer (FRET)
Reporting Name
Mycoplasma hominis PCRSpecimen Type
VariesNecessary Information
Specimen source is required.
Specimen Required
The high sensitivity of amplification by polymerase chain reaction (PCR) requires the specimen to be processed in an environment in which contamination of the specimen by Mycoplasma hominis DNA is not likely.
Submit only 1 of the following specimens:
Specimen Type: Swab
Supplies:
-Culturette (BBL Culture Swab) (T092)
-BD E-Swab (T853)
-M4-RT (T605)
Sources: Vaginal, cervix, urethra, urogenital, chest/mediastinal; bronchus or lung (donor swab); or upper respiratory sources (only infants <3 months: nasopharynx, nose, throat)
Container/Tube:
Preferred: Culture swab transport system (Dacron or rayon swab with aluminum or plastic shaft with either Stuart or Amies liquid medium)
Acceptable: Swab in transport media: M4, M4-RT, M5, M6, universal transport media, or ESwab
Specimen Volume: 1 swab
Collection Instructions:
Vaginal:
1. Collect specimen by swabbing back and forth over mucosa surface to maximize recovery of cells.
2. Place swab back into swab cylinder.
Urethra or cervical:
1. Collect specimen by inserting swab 1 to 3 cm and rotating 360 degrees.
2. Place swab back into swab cylinder.
Wound:
1. Collect specimen by swabbing back and forth over wound surface to maximize recovery of cells.
2. Place swab back into swab cylinder.
Specimen Type: Fluid
Sources: Pelvic, peritoneal, amniotic, prostatic secretions, semen, reproductive drainage or fluid, pleural/chest, chest tube, pericardial
Container/Tube: Sterile container
Specimen Volume: 1 to 2 mL
Specimen Type: Respiratory
Sources: sputum, tracheal secretions, bronchial washings, bronchoalveolar lavage, lung; or nasal washings (Note: Nasal washings may only be submitted for infants <3 months of age.)
Container/Tube: Sterile container
Specimen Volume: 1 to 2 mL
Specimen Type: Synovial fluid
Container/Tube:
Preferred: Lavender top (EDTA)
Acceptable: Pink top (EDTA), royal blue top (EDTA), sterile vial containing EDTA-derived aliquot, red clot tube (no anticoagulant), or sterile container
Specimen Volume: 0.5 mL
Collection Instructions: Send specimen in original tube.
Specimen Type: Urine (first void), kidney/bladder stone, or ureter
Container/Tube: Sterile container
Specimen Volume: 10 mL or entire specimen
Collection instructions: Urine first void: Specimen can be collected at any time during the day. The patient should not have urinated for at least 1 hour prior to specimen collection. The first voided portion is the initial 20 to 30 mL of the urine stream obtained without cleaning the external urethra.
Specimen Type: Tissue
Sources: Placenta, products of conception, urogenital, respiratory, bronchus, chest/mediastinal, bone, spine, or joint
Container/Tube: Sterile container
Specimen Volume: 5 mm(3)
Collection Instructions:
1. Collect fresh tissue specimen.
2. Submit fresh tissue only, do not add fluid to tissue
3. Refrigerate or freeze specimen.
Specimen Minimum Volume
Fluid: 1 mL
Urine, first void: 2 mL
Swab: 1 swab
Tissue: 5 mm(3)
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Refrigerated (preferred) | 7 days | |
| Frozen | 7 days |
Reject Due To
| Cotton or calcium alginate-tipped swab Wooden shaft swab Transport swab containing gel or charcoal Formalin-fixed and/or paraffin-embedded tissues, Port-a-Cul tube Anaerobic fluid vials Dry swab (no pledget or sponge) Bone marrow Decalcified bone Slides Respiratory fluid specimens placed in viral transport medium (VTM) or placed on a swab and then in VTM (M4-RT, M4, or M5) Body fluid specimens placed in viral transport medium (VTM) or placed on a swab and then in VTM (M4-RT, M4, or M5) |
Reject |
Reference Values
Not applicable
Interpretation
A positive polymerase chain reaction (PCR) result for the presence of a specific sequence found within the Metamycoplasma hominis tuf gene indicates the presence of M hominis DNA in the specimen.
A negative PCR result indicates the absence of detectable M hominis DNA in the specimen but does not rule out infection, as falsely negative results may occur due to inhibition of PCR, sequence variability underlying the primers and probes, or the presence of M hominis in quantities less than the limit of detection of the assay.
Day(s) Performed
Monday through Friday
Report Available
3 to 4 daysSpecimen Retention Time
7 daysTest Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
87798
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| MHRP | Mycoplasma hominis PCR | 68546-1 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| SRC86 | Specimen source | 31208-2 |
| 32536 | Mycoplasma hominis PCR | 68546-1 |
Forms
If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.