Paraneoplastic Pemphigus (Paraneoplastic Autoimmune Multiorgan Syndrome) Screening Antibodies by IIF
Also known as: PARA PEMPH
Use
Paraneoplastic pemphigus (PNP), also known as paraneoplastic autoimmune multiorgan syndrome (PAMS), is a severe mucocutaneous blistering and erosive disease associated with underlying malignancies, most often hematologic in nature, such as lymphoma and leukemia, and sarcoma. It affects individuals of all ages and can also occur in association with benign neoplasms, like Castleman disease, which is more frequent in children and adolescents. The presence of antibodies targeting various epithelial components can lead to the involvement of multiple organs, such as the eyes, lungs, and gastrointestinal tract, which forms the basis of the multiorgan syndrome. This test is intended to screen for IgG antibodies associated with paraneoplastic pemphigus using indirect immunofluorescence (IIF) on rodent substrates.
Special Instructions
Not provided.
Limitations
This screening includes only indirect immunofluorescence with rodent substrates and does not provide IgG envoplakin antibody ELISA testing. It is important to note that negative results do not rule out PNP/PAMS or other malignancy-associated disorders. Results should be correlated with direct immunofluorescence on tissue biopsy, histopathological examination, and additional serum antibody testing including IgG envoplakin by ELISA for a comprehensive clinical assessment. The indirect immunofluorescence method offers broader detection than ELISA, which may be more sensitive for low-level antibodies.
Methodology
Immunoassay (IIF)
Biomarkers
IgG Paraneoplastic Pemphigus Antibodies
Antibody
LOINC Codes
- 42936-5 - ICS IgA Ser Ql IF
- 10865-4 - ICS Ab Ser Ql
Result Turnaround Time
3-9 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
2 mL
Minimum Volume
0.5 mL
Container
ARUP standard transport tube
Collection Instructions
Transfer 2 mL serum to an ARUP standard transport tube. (Min: 0.5 mL)
Causes for Rejection
Hemolyzed or lipemic specimens. Plasma.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 1 week |
| Refrigerated | 2 weeks |
| Frozen | Indefinitely |
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