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Laboratory Medicine

Test Directory / TSH Receptor Antibody

TSH Receptor Antibody

Brown clotted serum, gel barrier

TestTSH Receptor Antibody
Common AbbreviationsTRAB
Tube typeBrown clotted serum, gel barrier
Clinical IndicationUsed in the diagnosis and monitoring of Graves disease as well as in the prediction of risk of thyrotoxicosis in the foetus or neonate
Specimen TypeBlood
Sample typeSerum
Minimum Volume2mL
Special PrecautionsNo special requirements
Stability 7 hours at 20 25°C, 6 days at 2-8°C, 12 months at 20°C (± 5°C).
Turnaround Time5 days
Reference Interval>1.8IU/L is positive
LimitationsDo not use samples from patients on sodium heparin treatment. Fractionated heparin (Clexane) showed no interference up to a concentration of 50 IU/L. Samples should not be taken from patients receiving therapy with high biotin doses (i.e. >5 mg/day) until at least 8 hours following the last biotin administration.
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York Emergency Department (A&E)

The current entrance to the Emergency Department (A&E) is closed and a new entrance at the south of the building is in operation.

Arrive at Entrance 1, the main entrance to York Hospital signposted from Wigginton Road, and park in the multi-storey car park.  A new pedestrian exit has been created at the end of the car park. Follow the green line on the floor to the emergency department. Please see our website news for more information about arrivals to A&E.