Thrombopoietin (TPO), Serum
Also known as: THROMBO S
Use
This test is used to measure the level of thrombopoietin in the serum, which may be useful in certain research settings. It is not recommended for routine evaluation of platelet disorders as it is typically used in clinical research to study thrombopoietin's role in various hematological conditions and its potential therapeutic applications.
Special Instructions
Patient preparation is critical as cytokine levels may demonstrate diurnal variation. It is recommended that cytokine levels be determined at the same time of day for improved longitudinal comparison. The test should be submitted as a separate specimen if multiple tests are ordered, as it is not performed at ARUP but rather by a non-ARUP laboratory.
Limitations
This test was performed using a kit that has not been cleared or approved by the FDA. The analytical performance characteristics have been determined by Quest Diagnostics Nichols Institute San Juan Capistrano. The test results should not be used for diagnosis without confirmation by other medically established means. Furthermore, thawed specimens are unacceptable, and the test is not suitable for general diagnosis of platelet or other hematological disorders.
New York Approved
Methodology
Immunoassay (Quantitative Immunoassay)
Biomarkers
LOINC Codes
- 43237-7
Result Turnaround Time
8-14 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.5 mL
Container
ARUP standard transport tube
Collection Instructions
Collect specimen in a plain red top or serum separator tube (SST).
Patient Preparation
Determine cytokine levels at the same time each day for accurate longitudinal comparison.
Storage Instructions
CRITICAL FROZEN
Causes for Rejection
Thawed specimens
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Unacceptable |
| Refrigerated | Unacceptable |
| Frozen | 1 month |