Lamellar Body Count, Amniotic Fluid

Last Modified: 4/12/2019 10:12:29 AM

Medical Necessity Documentation:  
Client Notes:  
Patient Preparation: Preterm labor or elective delivery between gestational weeks 32-39. (<32 weeks, fetal lung maturity almost always will be immature)
Specimen Requirements: 1.0 mL Amniotic Fluid in an Plastic Vial 
Collection Instructions: Specimen should not be centrifuged

If multiple Fluid tests are being requested please specify order of importance
Minimum Volume: 1.0 mL Amniotic Fluid
Transport & Storage: Temperature/Stability: 4 days Refrigerated
Rejection Criteria: Frozen Specimen; Samples with visible mucus, meconium or maternal urine contamination and Hct >1%
Reference Range:

Immature: < 15 TH/UL
Transitional: 15 - 50 TH/UL
Mature: >50 TH/UL

Critical Ranges:  
Test Comments:

The Fetal Lung Maturity test has been replaced by Lamellar Body Count. 

Cut-offs have been established by consensus protocol (Neerhof M, Dohnal JC, Ashwood ER, et al: Lamellar body counts: a consensus on protocol. Obset Gynecol 2001; 97: 318-320)

Methodology: Hematology Analyzer, Impedance platelet count
Clinical Significance:  
Custom Panel: No


Stat Eligible: Yes
Days Performed: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed: Parkview Regional Medical Center, Parkview Wabash, Parkview Warsaw
PHL Test Code: LBC
EPIC Test Code: LAB2669
Alternate Test Names: FLM; LBC
Included Tests:  
CPT Coding: 83664

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