Neonatal alloimmune thrombocytopenia (NAIT), initial screening

Alphabetical Test listing

Neonatal alloimmune thrombocytopenia (NAIT), initial screening-994

Test name:

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

FNAIT
NATP

Tests included:

Platelet Antigen Genotyping on parents
Platelet Antibody Identification Panel on mother and maternal serum crossmatched with paternal platelets

Concurrently order:
5603: Maternal and Paternal Initial Screening (order on mother)
5703: Paternal Initial Screening (order on father)

If no paternal sample is available, order: 5303: Maternal Only Initial Screening

Specimen type:

ACD-A whole blood, and serum from mother, and
ACD-A whole blood from father

Collection container:

Mother:

Yellow ACD-A x 3 and Red serum vial/tube - 10 mL x 3

Father:

Yellow ACD-A x3

Volume:

30 mL ACD-A whole blood, and 10 mL serum from mother
30 mL ACD-A whole blood from father

Minimum volume:

20 mL ACD-A whole blood, and 3 mL serum from mother
20 mL ACD-A whole blood from father

Collection instructions:

Collect ACD-A whole and serum tube from the mother
Collect ACD-A whole blood from the father
Immediately following collection, mix the yellow ACD tube by inverting 8 - 10 times to prevent clotting

Note: Collect M - F only.

Processing instructions:

ACD-A yellow:

Do not spin
Submit original tube

Red:

Allow sample to clot a minimum of 30 minutes
Spin within two (2) hours of sample collection
Transfer serum to an AHL False Bottom Plasma/Serum Transport Tube, labelled as serum

Transport container:

Yellow (ACD-A) tubes

and

False bottom plasma/serum transport vial/tubes (AHL)

Required forms/information:

Versiti Neonatal Alloimmune Thrombocytopenia (NAIT) requisition

Molecular Medicare Billing Request

Hospital clients submitting a request for this assay on an outpatient with Medicare should complete and submit a Molecular Medicare billing request form to notify us of the need for Allina Health Laboratory to bill insurance.

Transport and stability:

ACD whole blood:
Refrigerated (preferred) - 4 days

Frozen - NO

Ambient - NO

Serum:
Refrigerated - 4 days

Frozen - OK

Ambient - NO

Ship Mon - Fri only

Performing lab:

Versiti Blood Center of WI (5603/5703/5303); R-NX

Days set up:

Varies

TAT:

10 days

Method:

PCR and Fluorescent Hydrolysis Probes, Platelet Antibody Bead Array (PABA) and Flow Cytometry

Reference ranges:

See report

Preauthorization:

This test may require preauthorization from the insurance provider. Check the payer guidelines and, if needed, obtain the pre-authorization prior to sample collection.

CPT codes:

81105 x 2
81106 x 2
81107 x 2
81108 x 2
81109 x 2
81110 x 2
81111 x 2
81112 x 2
86022

Other billing information:

Medical necessity

Molecular Medicare Billing Request

Date created:

05/21/2018

Revised date:

03/13/2026

Review date:

03/13/2026