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HelpTest Code LBC Lamellar Body Count, Amniotic Fluid
Specimen Required
Container/Tube: Amniotic fluid container or plastic vial
Specimen Volume: 2 mL
Collection Instructions:
1. Do not centrifuge
2. Amniotic specimens must be free of blood and meconium contamination.
Useful For
Predicting fetal lung maturity and assessing the risk of developing neonatal respiratory distress syndrome, when performed from 32 to 39 weeks gestation
Method Name
Impedance
Reporting Name
Lamellar Body Count, AFSpecimen Type
Amniotic FldSpecimen Minimum Volume
0.75 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Amniotic Fld | Refrigerated (preferred) | 28 days | |
| Ambient | 7 days |
Reject Due To
| Gross hemolysis | Reject |
| Centrifuged specimen Presence of blood or meconium |
Reject |
Reference Values
Immature: <15,000/mcL
Indeterminate: 15,000-50,000/mcL
Mature: >50,000/mcL
Cutoffs are based on consensus protocol (Neerhof M, Dohnal JC, Ashwood ER, et al: Lamellar body counts: a consensus on protocol. Obstet Gynecol. 2001;97:318-320)
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 dayPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test was developed, and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
83664
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| LBC | Lamellar Body Count, AF | 19114-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| LBCC | Lamellar Body Count | 19114-8 |
| LBCI | Interpretation | 59462-2 |