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Test Code HSTNI High Sensitivity Troponin I 

Performing Laboratory

ChristianaCare:

  • Newark Campus
  • Middletown Campus
  • Wilmington Campus
  • Cecil Campus

Methodology

Chemiluminescent Microparticle Immunoassay (CMIA)

Specimen Requirements

Container/Tube:  Preferred: 4.5 mL Lithium Heparin (Mint Green top PST Gel) tube

Specimen:  Full tube
Collection Instructions:  For pediatrics, draw blood in a 0.5-mL green-top MICROTAINER®.
Note:  Label tube with patient’s full name and 1 additional unique patient identifier such as date of birth, medical record number, emergency ID number, date and time of draw, collector’s initials, and type of specimen.

Reference Values

Adult Patients (≥ 18 years) 

Reference Range (ng/L) 

Female 

≤ 14 

Male 

≤ 35 

Pediatric Patients (< 18 years) 

Reference Range (ng/L) 

< 1 year 

Testing not recommended 

1 - 17 years male 

< 8 

1 - 17 years female 

< 8 

Delta Criteria 

All Patients 

Reference Range (ng/L) 

Both genders 

(-)14 to (+)14 over a 2-to-6-hour period 

 

Day(s) Test Set Up

Monday through Sunday

Routine Turnaround Time:  2 hours

STAT Turnaround Time:  1 hour

Critical Test Value

Adult Patients (≥ 18 years) 

Critical Result (ng/L) 

Female Panic High 

≥ 64 

Male Panic High 

≥ 64 

All 

≥ 15 ng/L DELTA over a 2-to-6-hour period 

Pediatric Patients (< 18 years) 

Critical Result (ng/L) 

Female Panic High 

≥ 20 

Male Panic High 

≥ 20 

All 

≥ 10 ng/L DELTA over a 2-to-6-hour period