Lecithen/Sphingomyelin Ratio
Order Name
L S RATIO
Test Number: 2003900
Revision Date 10/31/2006
Test Number: 2003900
Revision Date 10/31/2006
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Amniotic Fluid Appearance
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|
Phosphatidyl Glycerol
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|
Ratio Lecithen/Sphingomylelin
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| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 5 mL (4.0) | Amniotic Fluid | See Instructions | |
| Instructions | Patient should be informed, relaxed and positioned for amniocentesis. In case of muliple pregnancies each amniotic sac should be sampled and analyzed individually. Place specimen on ice. Must be in special chemistry by 1100 hours for test to be performed same day. Stability: Refrigerated 10 days. Frozen indefinitely. | |||
| GENERAL INFORMATION | |
|---|---|
| Testing Schedule | Mon - Fri |
| Expected TAT | 1-4 days |
| Clinical Use | Used to evaluate fetal lung maturity. |
| CPT Code(s) | 83661; 84081 |
| Lab Section | Chemistry |