First trimester screen with NT

Alphabetical Test listing

First trimester screen with NT-13499

Test name:

Test number:

13499

Excellian order number:

LAB13499

Abbreviation:

FTNT

Alternate names:

First trimester screening-combined test
First trimester screen with Nuchal Translucency

Useful for:

Screening test in the first trimester of pregnancy for fetal Trisomy 21/Down syndrome and Trisomy 18/Edward's Syndrome.

Specimen type:

Serum

Collection container:

Gold serum separator (SST) tube

Volume:

3.0 mL

Minimum volume:

1.0 mL

Collection instructions:

Collection between 10.0 and 13.9 weeks gestation

Maternal serum specimens must be drawn prior to amniocentesis to avoid contamination with fetal blood.
Immediately following collection, thoroughly mix sample by gently inverting 5 times

Processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection

Pour off is not advised

Transport container:

Gold serum separator (SST) tube

Required forms/information:

Maternal testing clinical information form

Transport and stability:

Ambient (preferred) - 7 days

Refrigerated - 14 days

Frozen - 14 days

Freeze/thaw cycles - stable x3

Reason for rejection:

Gross hemolysis
Gross lipemia
Quantity not sufficient for analysis
Improper specimen type

Performing lab:

LabCorp RTP (017500): R-LC

Days set up:

Mo - Sa

TAT:

2 - 5 days

Method:

Chemiluminescent immunoassay

Reference ranges:

An interpretive report will be provided

CPT codes:

84163
86336
84702

Subject to medical necessity (Y/N):

Yes

LCD/NCD:

Medical necessity

LOINC code:

Result UNLOINC

Date created:

03/29/2019

Revised date:

10/25/2019

Review date:

01/02/2024