Amphiphysin Antibody IgG, CSF

3004510
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Example Reports
Negative
Positive

Ordering Recommendation

Consider ordering in individuals with stiff-person syndrome, paraneoplastic encephalomyelitis (PEM), and sensory neuronopathy (SN). May aid in diagnosis of occult tumor, recurrence of tumor, or second tumor. Serum is the preferred specimen; see Amphiphysin Antibody, IgG (2008893).

Mnemonic

AMPHI CSF

Methodology

Qualitative Immunoblot

Performed

Mon, Thu, Sat

Reported

1-4 days

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation
Collect

CSF.

Specimen Preparation

Transfer 1mL CSF to an ARUP Standard Transport Tube. (Min: 0.60 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Contaminated, heat-inactivated, hemolyzed, or lipemic specimens.

Remarks
Stability

Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 month

Reference Interval

Negative

Interpretive Data

Amphiphysin antibody is present in about 5 percent of patients with stiff-person syndrome and is found variably in other causes of paraneoplastic neurological syndrome (PNS). Amphiphysin antibody is mainly associated with small cell lung cancer and breast tumors.

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the U.S. Food and Drug Administration. This test was performed in a CLIA-certified laboratory and is intended for clinical purposes.

Compliance Category

Laboratory Developed Test (LDT)

Note

Hotline History

View Hotline History

 

Hotline History

Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
02/22/2022
X
N/A

CPT Codes

84182

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Components

Component Test Code* Component Chart Name LOINC
3004511 Amphiphysin Antibody, CSF 57750-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • PERM
  • Progressive encephalomyelitis
  • Sensory neuropathy
  • Stiff-man
  • Stiff-person
Amphiphysin Antibody IgG, CSF