Get in Touch

Get in Touch

Email 

labinfo@dshs.texas.gov

Phone 

Fax

Specimen Receiving
Monday-Friday, 8 am - 5 pm
Phone: 512-776-7598

Listeria species - Identification

Laboratory Fee Schedule
Procedure: MAQ0111A
CPT: N/A

Synonym(s):	Listeria; Listeria species
Requisition Form	G-22-(Food); G-23; G-21 Path-Pathogen; MSA-FORM 50-1
Test Description	Food analysis method used to identify Listeria species (including Listeria monocytogenes) includes enrichment, rapid screen, isolation, and biochemical testing.
Pre-Approval Needed	Regulatory or IDCU agent.
Supplemental Information Required	N/A
Supplemental Form(s)	N/A
Performed on Specimens from (sources)	Food, Milk Environmental
Sample/Specimen Type for Testing	Food/milk samples Environmental swabs
Minimum Volume/Size Required	100 grams (1/4 pound)
Storage/Preservation Prior to Shipping	Environmental swabs must be collected on appropriate swabs used for environmental testing (e.g., 3M™ Quick Swabs or Spongesicle type swabs or equivalent). Place food sample in sterile zip-lock or whirlpack bag or other sterile plastic container. Store on ice.
Transport Medium	N/A
Specimen Labeling	Sample Identification must match submission form.
Shipping and Specimen Handling Requirements	Ship samples on Ice and/or Ice Packs. Samples must be shipped for overnight delivery. Ship according to Dangerous Good Regulations, IATA, and/or CFR 49.
Method	BAX® Real-Time PCR Screen VIDAS® ELFA Screen FDA Bacteriological Analytical Manual (BAM)- Chapter 10
Turn-around Time	14 Days
Interferences/Limitations	The sample should represent the outer surface as well as the interior of the food. Environmental swabs must be tested within 48 hours of collection. Milk Samples must be tested within 60 hours of collection.
Common Causes for Rejection	Not collected by a Registered Sanitarian Insufficient quantity Improperly stored. Failure to meet shipping guidelines.
Additional Information	N/A