High Sensitivity Troponin I Baseline
high sensitivity Troponin I, hsTnI, troponin, troponin panel, cardiac troponin, cTnI, High Sensitivity Troponin & High Sensitivity Troponin I Baseline with Reflex to 2-hour HS Troponin I
Test Codes
EPIC: LAB1231497-High Sensitivity Troponin I (standalone), EPIC: LAB1231498-High Sensitivity Troponin I Baseline with Reflex to 2-hour HS Troponin I
Department
Chemistry
Specimen Collection Criteria
One Pearl-top K2EDTA PPT plasma gel separator tube (BD 362788) or lavender K2EDTA plasma tube. (Minimum Whole Blood: 4.0 mL)
Physician Office/Draw Specimen Preparation
Outpatient sites use only LAB1231497 High Sensitivity Troponin I (standalone). Invert tube 8 times for proper mixing of EDTA anticoagulant, then centrifuge immediately to separate plasma from cells. Transfer plasma to a plastic tube and store plasma aliquot in refrigerator (2-8°C or 36-46°F) (Minimum: 1.0 mL plasma).
Preparation for Courier Transport
- Centrifuged Pearl-top or lavender-top tube, refrigerated (28°C or 36-46°F). (Minimum: 1.0 mL plasma)
- Labeled aliquot tube, refrigerated (2-8°C or 36-46°F). (Minimum: 1.0 mL plasma)
Rejection Criteria
- Pearl-top or lavender top tubes with plasma not separated from cells within eight hours of collection.
- Specimens collected in inappropriate collection tubes.
- Specimens not collected and processed as indicated.
- Grossly hemolyzed specimens.
In-Lab Processing
Centrifuge Pearl-top or lavender top tubes received from inpatient locations to separate plasma from cells. Deliver immediately to the appropriate testing station or add aliquoted labeled plasma sample to the automated line.
Storage
Specimen Stability for Testing:
Pearl-top K2EDTA plasma gel separator tube OR spun-down plasma aliquot
Room Temperature (20-26°C or 68-78.8°F): 24 hours
Refrigerated (2-8°C or 36-46°F): 5 days
Frozen (-20°C/-4°F or below): Unacceptable
Lavender K2EDTA tube
Room Temperature (20-26°C or 68-78.8°F): 8 hours
Refrigerated (2-8°C or 36-46°F): 8 hours
Frozen (-20°C/-4°F or below): Unacceptable
Plasma Aliquot (From Lavender K2EDTA Tube)
Room Temperature (20-26°C or 68-78.8°F): 24 hours
Refrigerated (2-8°C or 36-46°F): 5 days
Frozen (-20°C/-4°F or below): Unacceptable
Laboratory
Dearborn Chemistry Laboratory
Farmington Hills Chemistry Laboratory
Grosse Pointe Chemistry Laboratory
Livonia Main Laboratory
Lenox Main Laboratory
Royal Oak Automated Chemistry Laboratory
Troy Chemistry
Laboratory
Reference Range
< 4 ng/L for single-Troponin rule-out algorithm.
Female: ≤ 17 ng/L (≤ 99th Percentile)
Male: ≤ 35 ng/L (≤ 99th Percentile)
See attached algorithm for significant 2-hour delta Troponin values.
Test Methodology
Automated Chemiluminescence Immunoassay.
Clinical Utility
> or = 200 ng/L
Delta Troponin > or = 10 ng/L, positive or negative change
CPT Codes
84484.
Contacts
Chemistry Laboratory – DBN
313-436-2196
Name: Chemistry Laboratory – DBN
Location:
Phone: 313-436-2196
Chemistry Laboratory – FH
947-521-5252
Name: Chemistry Laboratory – FH
Location:
Phone: 947-521-5252
Chemistry Laboratory – GP
313-473-1807
Name: Chemistry Laboratory – GP
Location:
Phone: 313-473-1807
Lenox Laboratory – LNX
947-523-4070
Name: Lenox Laboratory – LNX
Location:
Phone: 947-523-4070
Livonia Laboratory – LVA
947-523-4370
Name: Livonia Laboratory – LVA
Location:
Phone: 947-523-4370
Chemistry Laboratory – RO
248-551-8068
Name: Chemistry Laboratory – RO
Location:
Phone: 248-551-8068
Chemistry Laboratory – TR
248-964-8070
Name: Chemistry Laboratory – TR
Location:
Phone: 248-964-8070
Last Updated
10/3/2025
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