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Test Code ThermAmp Thermal Amplitude

Clinical System Name

Thermal Amplitude


Sample Requirements

Specimen: Whole Blood

Container(s): Red (preferred), Lavender/EDTA

Preferred Vol: 7 mL

Minimum Vol: 3 mL 

                         2 Lavender/EDTA Microtainers, each containing 0.5mL (if less than 4 months old) 


Note: No gel separators! Please call Immunohematology Laboratory (206-689-6534) prior to collecting sample.  Provider places a Miscellaneous Test order in CIS.  Complete a BWNW Request for Testing requisition. Red/Serum is acceptable though not preferred. SAMPLE MUST BE KEPT AT BODY TEMPERATURE AT ALL TIMES!  After collection, immediately place tube in an activated disposable infant heel warmer.  Send specimen and requisition to the lab IMMEDIATELY.


Processing Instructions

Reject due to: Separator gel tube

Spin: Y

Aliquot: Y

Temp: RT

Storage location: PROCESS SAMPLE IMMEDIATELY.  Sample must be kept at 37oC at all times.  Spin blood.  Once sample is separated from the red blood cells, place aliquot in room temp send outs rack.  Use BWNW Request for Testing requisition.  Fill out as completely as possible.  Remove "Originator/Hospital" copy; place a large Cerner label in the top right corner.  Put it and extra labels in the plastic box attached to the CPA refrigerator. 


Off-site collection:


STAT Performed TAT
N Daily 1 - 3 d


Performing Laboratory

Bloodworks Northwest



Bloodworks Northwest

Immunohematology Reference Lab

921 Terry Avenue

Seattle WA 98104


Phone number:  (206) 689-6534

Reference Range

Interpretive report provided.


Method: Hemagglutination

Analytical Volume: None specified


CPT Codes

86940 x 3, 86941 x 3


BWNW Request for Testing  

Send Out Instructions


Reference Test Name: Thermal Amplitude
Reference Test Number: 3140-00
Instructions: Send sample & requisition to blood bank.