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HelpTest Code ALDEFM Alpha Defensin, Lateral Flow Assay, Synovial Fluid
Additional Codes
| Mayo | ALDEF |
| Epic ID | LAB5419 |
Specimen Type
Synovial FluidOrdering Guidance
This test should only be used for patients with a total joint prosthesis. For specimens that are not from a prosthetic joint, order JIP / Joint Infection Panel, PCR, Synovial Fluid.
Necessary Information
Specimen source and type of joint are required. If not obtained from a prosthetic joint, testing will be canceled.
If ordering electronically, answers must be provided for the order entry questions.
If not ordering electronically, specimen source and type of joint must be provided on the request form.
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Red-top tube without preservative or clot activators
Submission Container/Tube: Plastic vial
Specimen Volume: 0.6 mL
Specimen Minimum Volume
0.1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Synovial Fluid | Refrigerated (preferred) | 7 days |
| Ambient | 7 days |
Transport refrigerated.
Reject Due To
| Gross hemolysis | Reject |
| Specimens collected in tubes with preservatives or clot activators | Reject |
| Specimens not from a prosthetic joint | Reject |
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Method Name
Lateral Flow Assay (LFA)
Useful For
Detection of alpha defensins 1-3, human host response proteins, in synovial fluid of adults with a total joint replacement who are being evaluated for revision surgery
This test is not intended to be used to determine timing for reimplantation in 2-stage procedures.
Day(s) Performed
Monday through Friday, Sunday
Report Available
Same day/1 dayReference Values
Negative
Reference values apply to all ages.
CPT Code Information
83518