Troponin-I HS

Test Code

TROPHS

CPT Codes
84484

Preferred Specimen

GREEN Lithium Heparin Plasma

Minimum Volume

0.50 mL

Other Acceptable Specimens

SST Serum Separator, Red No Gel

Instructions

Test performed on whole blood only

Transport Container

GREEN Lithium Heparin

Transport Temperature

4 Hours

Specimen Stability

4 Hours

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

Gross hemoloysis

Methodology
PATHFAST®

Reference Range

0-29 ng/L; Critical Value: =30 ng/L

Clinical Significance

Measurements of cardiac Troponin I are used as an aid in the diagnosis of acute myocardial infarction (AMI). Cardiac troponin I (cTnI) is a cardiac muscle protein with a molecular weight of 22,500 daltons. In the heart, troponin I (TnI) together with troponin T (TnT) and troponin C (TnC) forms a troponin complex that plays a fundamental role in the transmission of intracellular calcium signal of actin-myosin interaction. Troponin I is released rapidly to blood circulation 4-6 hours after the onset of AMI and remains elevated for several days thereafter. High sensitivity troponin assays have been defined as those which can achieve less than or equal to 10% CV at the 99th percentile of a healthy population and are capable of detecting troponin in greater than 50% of both male and female subgroups.

Performed By
RFGH Laboratory

Performing Laboratory
RFGH Laboratory

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.