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HelpTest Code LAB1234595 MyoMarker 3 Profile
Performing Laboratory
Forwarded to Esoterix Endocrinology
Specimen Required
Collection Container/Tube: 10 mL Plain Red top tube
Submission Container/Tube: Plastic vial
Specimen Volume: 5 mL
Acceptable: Yellow (Gold) top tube (SST)
Collection Instructions: Draw blood in a plain red-top tube(s), serum gel tube is acceptable. Spin down and send 5 mL of serum refrigerated in a plastic vial.
Specimen Minimum Volume
4 mL (volume does NOT allow for repeat testing)
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 14 days | |
| Frozen | 60 days | ||
| Ambient | 7 days |
Reject Due To
| Gross hemolysis: | Reject |
| Thawing: | Warm OK; Cold OK |
| Gross lipemia: | Reject |
| Gross icterus | Reject |
| Other: | Anything other than serum; bacterial contamination |
Method Name
Enzyme-linked immunosorbent assay (ELISA); RIPA Gel Radiography
CPT Code Information
- 83516 x 9
- 86235 x 7
Clinical Information
The idiopathic inflammatory myopathies (IIM) are a heterogeneous group of disorders characterized by muscle weakness, resulting from chronic muscle inflammation of unknown cause. Patients with IIM have a variety of autoantibodies with various clinical utilities that fall into two main groups. One group of autoantibodies are found in patients with myositis and are known as Myositis Specific Autoantibodies (MSA). The MSAs are highly specific for patients with polymyositis (PM) dermatomyositis (DM), anti-synthetase syndrome and necrotizing myositis. The second group of autoantibodies are considered Myositis Associated Autoantibodies (MAA). These appear in myositis overlap syndrome and in other connective tissue diseases, which correlate with certain clinical and/or pathophysiological conditions.
Reference Values
Anti-PL-7 Ab, Anti-PL-12 Ab, Anti-EJ Ab, Anti-OJ Ab, Anti-SRP Ab, Anti-Mi-2-Ab, Anti-U3 RNP (Fibrillarin), Anti-U2 RNP Ab, Anti-Ku Ab:
Reference Range: Negative
Interpretation for:
Anti-Jo-1 Ab, Anti-TIF-1gamma Ab, Anti-MDA-5-Ab (CADM-140), Anti-NXP-2 (P140) Ab, Anti-PM/Scl-100 Ab, Anti-SS-A 52kD Ab IgG, Anti-U1-RNP Ab:
Reference Range: <20
Negative: <20 units
Weak Positive: 20-39 units
Moderate Positive: 40-80 units
Strong Positive: >80 units