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HelpTest ID BLOD5015 Thermal Amplitude
AKA
Thermal Cold Antibody Test
Specimen Type/Requirements
Red (no-gel serum) Tube, maintain at 37° C prior to centrifugation and separation
Specimen will be rejected if overt hemolysis
Specimen Volume
| Preferred Volume | 6.0-8.0 mL whole blood separated |
| Minimum Volume | 3.0 mL whole blood separated |
Stability/Transport
Maintain at 37° C prior to centrifugation and separation of serum from cells. Allow specimen to clot at 37° C. Separate and send both cells/clot and serum in separate, labeled tubes.
| Room Temperature | 3 days | |
| Refrigerated | 3 days | Preferred for Transport |
| Frozen | N/A |
Performed Test Frequency
Monday-Sunday
Methodology
Gel, Test Tube
Performing Lab
Sanford Laboratories Fargo-Transfusion Services/Blood Bank
CPT Code
86157
Useful For
Thermal amplitude is the temperature range over which an antibody can react. Cold reactive autoantibodies occasionally exhibit thermal amplitude 20-24° Celsius or higher) and may interfere with routine cell and serum tests. Physicians may request a thermal amplitude test before performing certain surgical procedures when these antibodies are identified.