Days Set Up
Daily
Analytic Time

1 day

Soft Order Code
MMLR

Test Updated:

Synonyms

Fetal Lung Maturity
FLM

Looking to order a test?

We’ve provided helpful links to make ordering easy.

Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

Sysmex XE5000

Test Usage

Predicting fetal lung maturity and assessing the risk of developing neonatal respiratory distress syndrome, when performed during 32 to 39 weeks gestation.

Reference Range

Immature: <15,000/mcL; Indeterminate: 15,000 - 50,000/mcL; Mature: >50,000/mcL.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection

Collect amniotic fluid and refrigerate. Avoid contamination of the amniotic fluid with blood, meconium, or maternal urine. If possible, send specimen immediately. Do not centrifuge sample. Note that an additional 10 mL of amniotic fluid are needed if the FLM results indicate that the lung is immature and the clinician wishes to add the L/S Ratio.

Normal Volume
10 mL amniotic fluid
Minimum Volume
 

Billing Information

CPT Code
83664
Pro Fee Code
 
LOINC
 

Have More Questions?

Explore our helpful billing resources:

Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.