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HelpTest Code SPPSI Stiff-Person Spectrum Disorders, including Progressive Encephalomyelitis with Rigidity and Myoclonus, Interpretation, Serum
Useful For
Interpretation for the evaluation of stiff-person spectrum disorders including the classical or focal forms, such as stiff-limb or stiff-trunk, and progressive encephalomyelitis with rigidity and myoclonus, using serum specimens
Method Name
Only orderable as part of a profile. For more information see SPPS / Stiff-Person Spectrum Disorders Evaluation, including Progressive Encephalomyelitis with Rigidity and Myoclonus, Serum.
Medical Interpretation
Reporting Name
Stiff-Person/PERM Interp, SSpecimen Type
SerumSpecimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 28 days | |
| Frozen | 28 days | ||
| Ambient | 72 hours |
Reference Values
Only orderable as part of a profile. For more information see SPPS / Stiff-Person Spectrum Disorders Evaluation, including Progressive Encephalomyelitis with Rigidity and Myoclonus, Serum.
Interpretation
Seropositivity supports the clinical diagnosis of stiff-person spectrum disorder (classical stiff-person, stiff-limb, stiff-trunk, or progressive encephalomyelitis with rigidity and myoclonus). A paraneoplastic basis should be considered.
Day(s) Performed
Varies
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
Not ApplicableLOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| SPPSI | Stiff-Person/PERM Interp, S | 69048-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 614601 | Stiff-Person/PERM Interp, S | 69048-7 |
| 618910 | IFA Notes | 48767-8 |