Test Catalog

Test ID: CULAF    
Amniotic Fluid Culture for Genetic Testing

Specimen Type Describes the specimen type validated for testing

Amniotic Fld

Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Provide a reason for referral and gestational age with each specimen. The laboratory will not reject testing if this information is not provided, but appropriate testing and interpretation may be compromised or delayed.

 

Optimal timing for specimen collection is during 14 to 18 weeks of gestation, but specimens collected at other weeks of gestation are also accepted.

 

Container/Tube: Amniotic fluid container

Specimen Volume: 5-10 mL

Collection Instructions:

1. Discard the first 2 mL of amniotic fluid. If the culture will be performed in conjunction with chromosome analysis and alpha-fetoprotein, a total of approximately 25 mL to 30 mL will be needed for the combined studies.

2. Place the tubes in a Styrofoam container (T329).

3. Fill remaining space with packing material.

4. Unavoidably, about 1% to 2% of mailed-in specimens are not viable.

5. Bloody specimens are undesirable.

6. If the specimen does not grow in culture, you will be notified within 7 days of receipt.

Additional Information:

1. Advise Express Mail or equivalent if not on courier service.

2. Results will be reported and also telephoned or faxed, if requested.

Special Instructions Library of PDFs including pertinent information and forms related to the test

Forms

New York Clients-Informed consent is required. Document on the request form or electronic order that a copy is on file. The following documents are available in Special Instructions:

-Informed Consent for Genetic Testing (T576)

-Informed Consent for Genetic Testing-Spanish (T826)

Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

5 mL

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

No specimen should be rejected.

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTime
Amniotic FldRefrigerated (preferred)
 Ambient