TROPONIN I, HIGH SENSITIVITY

Message
Note: This test has different reporting units compared to previous Toponin testing.


Test Code
TNIHS (OE & LAB)


CPT Codes
84484

Preferred Specimen
Green Tube (Lithium Heparin)

 


Patient Preparation
None

Minimum Volume
2mL


Other Acceptable Specimens
None


Instructions
Centrifuge for complete separation of plasma and red cells. 


Transport Container
GREEN Tube


Transport Temperature
Room Temperature


Specimen Stability

  • 15-30°C up to 4 hours

  • 2-8°C up to 2 days




Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Clotted Specimen


Methodology
CIA (Chemiluminescent immunoassay)

Setup Schedule
DAILY, as received


Report Available
STAT: <60 Minutes
Routine: <4 Hours


Reference Range
Male: 0-20 pg/mL Female: 0-12 pg/mL
 Reference ranges may vary based on performing lab. Use lab reports when interpreting patient results.


Clinical Significance
If patient's result is : < 99th percential:
High Sensitivity Troponin result is at or below the 99th percentile upper reference limit.  Myocardial injury is unlikely.  Recommend additional and serial testing to exclude evolving myocardial injury or acute coronary syndrome as clinically indicated



If patient result is > 99th percential:


High Sensitivity Troponin result exceeds the 99th percentile upper reference limit.  This is consistent with myocardial injury.  Causes include but are not limited to:  heart failure, myocarditis, sepsis, chronic kidney disease, PE).  Recommend additional and serial testing to determine if stable hs-Troponin elevations are present consistent with chronic myocardial injury. 

Rising and/or falling levels in the absence of ischemiasuggest acute myocardial injury.

Rising and/or falling levels in the presence of ischemia and the appropriate clinical setting are consistent with an acute myocardial infarction



Performing Laboratory
Mount Sinai Hospital
Holy Cross Hospital



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.