Test Directory
| Test Code | ||||
| TSHHT | ||||
| Test Name | ||||
| Thyroid Stimulating Hormone with HAMA Treatment | ||||
| CPT Codes | ||||
| 84443 X 2 | ||||
| Included Tests | ||||
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| Expected Turnaround Time | ||||
| 3 - 4 days | ||||
| Clinical Utility | ||||
| Precision in the estimation of TSH is crucial to the follow-up of subjects with thyroid disorders. The preincubation of samples to remove HAMA immunoglobulins provides a way to ensure that an otherwise unsuspected rise or drop in TSH concentration will not be interpreted as either a false positive or false negative. | ||||
| Specimen and Container Info | ||||
|
Specimen Type: Serum
Collection Container: Red Top, Plain Alternate Collection Container: Gold Top, Serum Separator Desired Specimen Volume: 2 mL |
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| Collection Instructions | ||||
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| Processing and Submission Instructions | ||||
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| Patient Preparation | ||||
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Specimen collection after fluorescein dye angiography should be delayed for at least 3 days. For patients on hemodialysis, specimen collection should be delayed for 2 weeks after angiography. |
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| Transport Instructions | ||||
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Transport to the laboratory refrigerated. |
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| Stability Requirements | ||||
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| Methodology | ||||
| Immunoassay | ||||
| Reference Intervals | ||||
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See patient report. |
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| Limitations | ||||
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According to the assay manufacturer Siemens: samples containing fluorescein can produce falsely depressed values. |
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| Reference Lab | ||||
| Quest Diagnostics Nichols Institute | ||||
| Testing Schedule | ||||
| Routine, 6 times per week | ||||
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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