TRH Stimulation I

Test Code: TD_2837

CPT Code(s): 84443, 80439

$123

Test Details

Alternative Name(s)

N/A

Test Includes

TRH Stimulation I

Methodology

Roche COBAS electrochemiluminescent immunoassay (ECLIA)

Rejection Criteria

Gross hemolysis

Reference Range(s)

By Report

Specimen Requirements

Preferred Specimen

Serum separator tube (SST)

Minimum Volume

2 mL for each sample collected

Sample Stability

8 days room temperature
2 weeks refrigerated
2 years frozen
allow only one freeze/thaw cycle

Transport Temperature

Refrigerated

Collection Instructions

Note: patient name and time of collection must be visible on timed collection tubes for testing.
1. Collect baseline sample.
2 mL serum. Allow SST to clot in an upright position for at least 30 minutes, then centrifuge sample within 2 hours of collection. Clearly label tube with time of collection and apply fluorescent timed collection label. Refrigerate.
2. Collect 2 mL serum for 1st, 2nd, 3rd, and 4th post specimens, Allow each SST to clot in an upright position for at least 30 minutes, then centrifuge sample within 2 hours of collection. Clearly label tube with time of collection and apply fluorescent timed collection label. Refrigerate.
3. Submit baseline, 1st, 2nd, 3rd, and 4th specimens rubber banded together. Refrigerate.

Alternative Specimen

1. Collect baseline sample.
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 within 2 hours of collection. Clearly label tube as serum from a plain red top tube with time of collection and apply fluorescent timed collection label. Refrigerate.
2. Collect 2 mL serum from a plain red top tube for 1st, 2nd, 3rd, and 4th post specimens. 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 with time of collection and apply fluorescent timed collection label. Refrigerate.
3. Submit baseline, 1st, 2nd, 3rd, and 4th specimens rubber banded together. Refrigerate.