LBCR - Specimen: Lamellar Body Count Reflex, Amniotic Fluid

Test Catalog

Take Our Survey

Test ID: LBCR    
Lamellar Body Count Reflex, Amniotic Fluid

Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.

If lamellar body count is indeterminate (between 15,000-50,000/mcL), then fetal lung profile (includes lecithin/sphingomyelin ratio and phosphatidylglycerol) is performed, at an additional charge, to aid in the risk assessment for respiratory distress syndrome.

Specimen Type Describes the specimen type needed for testing

Amniotic Fld

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.

Collection Container/Tube: Amniotic fluid container

Submission Container/Tube: Plastic vial

Specimen Volume: 10 mL

Collection Instructions: Do not centrifuge.

Additional Information: 

1. Centrifuging the specimen may cause erroneous results.

2. Submitting less than the requested 10 mL may prevent chromatographic determination of the lecithin/sphingomyelin (L/S) ratio, if needed.

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.

3 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected


Visible hemolysis, reject







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 TypeTemperatureTime
Amniotic FldRefrigerated (preferred)72 hours
 Ambient 72 hours