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HelpTest Code TRH STIM TRH Stimulation - TSH
Clinical System Name
TRH Stimulation
Synonyms
thyrotropin releasing hormone
Sample Requirements
Specimen: Whole blood
Container(s): Gold SST, Red, Gold Microtainer, Dark Green/Sodium Heparin, Lt. Green/Lithium Heparin Microtainer
Preferred Vol: 1.0 mL
Minimum Vol: 0.5 mL
Note: Draw samples at baseline, 30, 60, 90, 120 minutes post TRH stimulation. Note collection times on samples and requisition.
Processing Instructions
Reject due to: gross lipemia
Spin: Y
Aliquot: Y
Temp: 2-8 C
Storage location: CPA refrigerator, FrigD rack. Serum/plasma should be removed from separator for storage.
Note: Minimum volume of 1.0 mL SERUM may be shared with TSH, T3, T4, free T3, and free T4.
Off-site collection: Spin blood. Transfer serum/plasma to plastic aliquot container. Refrigerate.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| gel separator with serum/plasma | Refrigerated | 48 h |
| separated serum/plasma | Room temp | 2 h |
| Refrigerated | 7 d | |
| Frozen -20 C | 4 w |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | M-F, day shift | 1-4 d |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Chemistry
Location: Chem West
Phone Number: (206) 987-2617
CPT Codes
84443
Methodology
Method: Chemiluminescent microparticle immunoassay (CMIA) by Abbott Alinity i, third generation
Analytical Volume: 0.200 mL serum/plasma
Limitations: Turbidity may affect results.
Reference Range
Refer to TSH for baseline reference values.