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Human Surfactant Protein D (SP-D)
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Ordering Recommendation
May aid in the evaluation of lung inflammation or injury in various types of interstitial lung disease (ILD).
Mnemonic
Methodology
Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Tue
Reported
1-8 days
New York DOH Approval Status
Specimen Required
Plain Red.
Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transfer 1.5 mL serum to ARUP Standard Transport Tube. (Min: 0.5 mL)
Refrigerated.
Plasma, CSF, or other body fluids. Contaminated, heat-inactivated, hemolyzed, icteric, or severely lipemic specimens.
Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 month
Reference Interval
1-300 ng/mL
Interpretive Data
Human Surfactant Protein D (SP-D) is a non-specific indicator of lung inflammation or damage. Elevated levels are associated with various types of interstitial lung diseases (ILD).
Abnormal SP-D results should be interpreted in the appropriate clinical context. A negative result does not rule out ILD.
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
Note
Hotline History
CPT Codes
83520
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 3001970 | Human Surfactant Protein D | 74541-4 |
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