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Laboratory Medicine

Test catalogue

Neonatal Alloimmune Thrombocytopenia, Mother (NAIT)

Test Name

Neonatal Alloimmune Thrombocytopenia, Mother (NAIT)

Gold Tube Lavender Tube Specimen Type / Requirements

Container Type = 3 Lavender Top and 1 Gold Top Tubes

Minimum Venous Volume = 3 x 3 mL EDTA specimen (Purple Top), 1 Gold Top

Tubes must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Collect specimen in 3 lavender tops and 1 gold top tube for maternal patients. To avoid platelet clumping, samples should be well mixed at time of collection. Requisition must have ordering physician, phlebotomist signature, collection date and time.Specimen must be clearly labeled with patient information. Paternal specimen (if available) to be collected. Medical Director / High Risk OB Physician approval required.

Stability: Stable at room temperature for 2 hrs.

Transportation: Send to Transfusion Medicine lab at room temperature as soon as possible. Must be delivered to TM by 12:00, Moday - Thursday only

Sample Rejection Criteria: Grossly hemolytic, icteric or lipemic specimens. Unlabeled and/or mislabeled specimens. Incomplete TM and/or NAIT requisition.

Required Documentation

Ensure both requisitions are completed with ordering physician name and phlebotomist signature, date and time of draw.

CBS - Platelet Immunology Requisition required per patient specimen

Turnaround Time (TAT)

3 business days

Test Utilization


Reference Value

See Interpretive Report

Test Code




Testing Location

Referred Out – MB, Canada (ROCBSW39)

Other Information

Last Updated: December 2, 2020