2 mL serum. Allow SST to clot in an upright position for at least 30 minutes, then centrifuge sample within 2 hours of collection. Refrigerate.
Alternate Specimen Requirements
2 mL serum from a plain red top tube. Allow sample to clot in an upright position for at least 60 minutes, then centrifuge sample and transfer serum to a plastic transport tube within 2 hours of collection. Clearly label tube as serum from a plain red top tube. Refrigerate.
Minimum Volume
2 mL Serum
Transport Temperature
Refrigerated
Rejection Criteria
Hemolysis Samples From Patients Routinely Exposed To Animals or Animal Serum Who Develop Heterophilic Antibodies
Specimen Stability
1 Day Room Temperature 1 Week Refrigerated 1 Year Frozen
Synonyms
TSI
Thyroid Stimulating Immunoglobulin
Thyroid Stimulating Antibody
Thyretain Equivalent
TSI/Thyretain Equivalent
Reference Range
<0.55 Iu/L
Methodology
Semi-Quantitative Chemiluminescent Immunoassay (CLIA) This Assay is traceable To World Health organization (WHO) 2nd International Standard For Thyroid Stimulating Antibody, National Institute For Biological Standards and Control (NIBSC) Code: 08/204.
CPT and LOINC
84445 LOINC: 30567-2
CPT Codes
84445
LOINC
30567-2
Test Setup Days Performed
Monday Through Friday AM Shift
Expected Turnaround Time
1-2 Days
Performing Lab
Clinical Pathology Laboratories Inc.
Ordering/Specimen
Collect
Serum Separator Tube
Preferred Specimen Requirements
2 mL serum. Allow SST to clot in an upright position for at least 30 minutes, then centrifuge sample within 2 hours of collection. Refrigerate.
Alternate Specimen Requirements
2 mL serum from a plain red top tube. Allow sample to clot in an upright position for at least 60 minutes, then centrifuge sample and transfer serum to a plastic transport tube within 2 hours of collection. Clearly label tube as serum from a plain red top tube. Refrigerate.
Minimum Volume
2 mL Serum
Transport Temperature
Refrigerated
Rejection Criteria
Hemolysis Samples From Patients Routinely Exposed To Animals or Animal Serum Who Develop Heterophilic Antibodies
Specimen Stability
1 Day Room Temperature 1 Week Refrigerated 1 Year Frozen
Synonyms
TSI
Thyroid Stimulating Immunoglobulin
Thyroid Stimulating Antibody
Thyretain Equivalent
TSI/Thyretain Equivalent
Clinical Information
Reference Range
Reference Range
<0.55 Iu/L
Methodology
Methodology
Semi-Quantitative Chemiluminescent Immunoassay (CLIA) This Assay is traceable To World Health organization (WHO) 2nd International Standard For Thyroid Stimulating Antibody, National Institute For Biological Standards and Control (NIBSC) Code: 08/204.
Serum Separator Tube