Laboratory Medicine

Test catalogue

TSH Receptor Antibodies (TRAb, Thyroid Stimulating Immunoglobulin, TSI)
Test Name TSH Receptor Antibodies (TRAb, Thyroid Stimulating Immunoglobulin, TSI)
Specimen Type/Requirements Container Type = 1 Gold Top Minimum Testing Volume = 1mL Serum Collect pediatric sample in red or yellow microtainer Cord blood is also acceptable.
Specimen Handling Collection Instructions: Collect sample in gold top (SST) or red top tube. Write your initials, date and time of collection on the collection label or requisition. Laboratory Staff Instructions: Serum should be separated from cells within 1 hour. Once seperated, sample should be frozen until time of testing. Avoid repeated freezing and thawing. Rejection criteria: Plasma, grossly lipemic, grossly hemolysed, mislabeled or samples of non sufficient quantity. Stability: Stable refrigerated at 2-8◦C for 7 days. and frozen for 1 month at -20°C or lower. Transportation: Send sample to core lab as soon as possible.
Required Documentation
Turnaround time (TAT) 7 days	Test Utilization
Reference Value Therapeutic: Normal: < 1.0 U/L; Borderline: 1.0-2.0 U/L; Abnormal: >2.0 U/L	Cord: Normal <= 2 IU/L Elevated > 2 IU/L Values greater than 4 IU/L are at higher risk of developing neonatal hyperthyroidism
Test Code TSII	Methodology Electrochemiluminescence Immunoassay (ECLIA)
Testing Location SMH-Biochemistry	Other Information Last Updated: January 29th 2021

TSH Receptor Antibodies (TRAb, Thyroid Stimulating Immunoglobulin, TSI)

Test Name

TSH Receptor Antibodies (TRAb, Thyroid Stimulating Immunoglobulin, TSI)

Specimen Type/Requirements

Container Type = 1 Gold Top

Minimum Testing Volume = 1mL Serum

Collect pediatric sample in red or yellow microtainer

Cord blood is also acceptable.

Specimen Handling

Collection Instructions: Collect sample in gold top (SST) or red top tube. Write your initials, date and time of collection on the collection label or requisition.

Laboratory Staff Instructions: Serum should be separated from cells within 1 hour. Once seperated, sample should be frozen until time of testing. Avoid repeated freezing and thawing.

Rejection criteria: Plasma, grossly lipemic, grossly hemolysed, mislabeled or samples of non sufficient quantity.

Stability: Stable refrigerated at 2-8◦C for 7 days. and frozen for 1 month at -20°C or lower.

Transportation: Send sample to core lab as soon as possible.

Required Documentation

Turnaround time (TAT)

7 days

Test Utilization

Reference Value

Therapeutic:

Normal: < 1.0 U/L;
Borderline: 1.0-2.0 U/L;
Abnormal: >2.0 U/L

Cord:

Normal <= 2 IU/L
Elevated > 2 IU/L
Values greater than 4 IU/L are at higher
risk of developing neonatal hyperthyroidism

Test Code

TSII

Methodology

Electrochemiluminescence Immunoassay (ECLIA)

Testing Location

SMH-Biochemistry

Other Information

Last Updated: January 29th 2021