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Test Code Fern test FERN TEST

Aliasis

Refer to ROM

Patient Preparation

No special patient preparations required

Collection Method

Amniotic fluid collection

Minimum Volume

0.5 mL

Container

Amniotic fluid: sterile container

Preferred Specimen

Amniotic fluid: sterile container

Acceptable Specimen(s)

Amniotic fluid: sterile container

Reference or Target Ranges

Positive test will show distinctive “fern-like” crystalization pattern

Negative test will show no crystallization pattern

Reportable Units

Positve or Negative

Critical Value

Not defined for this assay

Reasons for Rejection

Other:                           

QNS, contaminated, Improperly labeled, Improper specimen type

Performance Information

Days and Time Performed

24/7

Expected Turn Around Time

Stat: 1 Hour, Routine: 4 Hours

Stat Availability

Yes

Performing Bench

CRMC Chemistry

Additional Information / Important Notes

This test is used only as a backup procedure. Refer to ROM for current test method.

The presence of blood, urine or cervical mucous may result in a false-positive test.

Methodology/Method Description

Manual slide