Test ID: FMGA
Myelin Assoc. Glycoprotein (MAG) Antibody w/Reflex to MAG-SGPG & MAG, EIA
Secondary ID 
A test code used for billing and in test definitions created prior to November 2011
57249
NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.
Yes
Reflex Tests Lists test(s) that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial test(s)
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| FMGS | MAG EIA Reflex | No | No |
Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.
If FMGA is Positive, then FMGS (MAG EIA Reflex) is performed at an additional charge.
Method Name A short description of the method used to perform the test
Western Blot (WB)
Enzyme Immunoassay (EIA) (if appropriate)
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
MAG w/Reflex MAG-SGPG and MAG, EIA
Aliases Lists additional common names for a test, as an aid in searching
MAG FORWARD
Specimen Type Describes the specimen type needed for testing
Serum
Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.
Draw blood in a plain, red-top tube(s). Spin down and send 2 mL of serum refrigerated.
Note: 1. Avoid hemolysis
2. Overnight fasting is preferred.
3. Serum gel tube is acceptable, but must pour off into a plastic vial.
Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.
0.6 mL
Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected
| Specimens other than | Serum |
| Anticoagulants other than | NA |
| Hemolysis | NA |
| Thawing | Warm OK; Cold OK |
| Lipemia | NA |
| Icteric | NA |
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 7 days |
| Frozen | 30 days | |
| Ambient | 24 hours |
Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.
MAG Ab (IgM), Western Blot
Reference Range: Negative
MAG-SGPG Ab (IgM), EIA
Reference Range:
< or = 1:1600
MAG Ab (IgM), EIA
<1:1600
Reference ranges for MAG IgM Antibody:
Normal: <1:1600
Moderately Elevated: 1:1600-1:3200
Highly Elevated: >1:6400
Test Performed by: Quest Diagnostics/Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92690
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Monday and Wednesday
Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.
5 days
Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result
7-14 days
Performing Laboratory Location The location of the laboratory that performs the test
Quest Diagnostics/Nichols Institute
Test Classification Provides information regarding the medical device classification for laboratory test kits and reagents. Tests may be classified as cleared or approved by the US Food and Drug Administration (FDA) and used per manufacturer's instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR), Investigation Use Only (IUO) product, or a Research Use Only (RUO) product.
This test was developed and its performance characteristics have been determined by Quest Diagnostics Nichols Institute, San Juan Capistrano. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. Performance characteristics refer to the analytical performance of the test.
CPT Code Information Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Medical Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.
84181-Western blot with interpretation and report
83520 x 2-Not otherwise specified (if appropriate)
LOINC® Code Information Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the result codes returned for this test or profile.
| Result ID | Reporting Name | LOINC Code |
|---|---|---|
| Z2522 | MAG Ab (IgM), Western Blot | In Process |
External
link
PDF
document
Excel
document
Word
document