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Test Code LAB10596 Lamellar Body Count - Amniotic Fluid

Department

HEMATOLOGY

Collection Requirements

PROTECT FROM LIGHT.

Amniotic fluid from amniocentesis, collected by physician.

Primary Collection Container

Sterile Container

Transport

On ice, protected from light, delivered within 60 minutes.

Preferred Transport Temperature

Refrigerated

Processing

DO NOT CENTRIFUGE.

Deliver to Hematology ASAP/within 60 minutes.

Deliver remaining specimen to Chemistry for any additional testing.

Stability

Ambient: 1 hour

On ice: 4 hours

Minimum Testing Volume

1.0 mL

Reference Range

NEGATIVE: <16 K/cmm

TRANSITIONAL: 16-59 K/cmm

POSITIVE: >59 K/cmm

Methodology

Lamellar bodies counted on the platelet channel of the Sysmex XE-5000

Performed

Sunday – Saturday

Reported

As completed

CPT Codes

83664

Unacceptable Conditions

Specimen with visable blood (>2% HCT) or meconium is unacceptable.

Prolonged exposure to light is unacceptable.

Specimens with macroscopic clumping are unacceptable.

Specimens should not be frozen or centrifuged. Freezing and centrifuging the amniotic fluid falsely decreases the lamellar body count.