Chemistry

Important Cardiac Marker Notification – Spectrum Health Reed City Laboratory

Spectrum Health Reed City Laboratory will be switching instrument vendors, from Beckman Coulter to Roche, Tuesday November 29th, 2016. The change will be seamless for all tests except Troponin and B-type Natriuretic Peptide, as both of those tests are specific by vendor they will change to reflect those of the new vendor.

  • Troponin I will be switched to Troponin T.
  • BNP will be switched to NT-ProBNP.

New cardiac marker numerical results and reference ranges will not be interchangeable with the old.  The new markers are consistent with what is in place at Spectrum Health Grand Rapids, Gerber and Zeeland Hospital Laboratories. Spectrum Health Big Rapids, United and Kelsey Hospital Laboratories will be following suit over the next 12 months.

Troponin T Blood Level (SH #8048, EPIC #LAB139, CPT 84484):

Replaces Troponin I (SH #8038, EPIC #LAB7470) and Troponin I Blodgett (SH #8037, EPIC #LAB211581)

Specimen Requirements: Draw one green top lithium heparin plasma separator tube.

New Interpretive Ranges:

< 0.03 ng/mL NO CARDIAC DAMAGE
0.03 – 0.09 ng/mL POSSIBLE CARDIAC DAMAGE
≥ 0.10 ng/mL DEFINITE CARDIAC DAMAGE

Pro B Natriuretic Peptide (NT-ProBNP) Blood Level (SH #259, EPIC #LAB3219, CPT 83880):

Replacing BNP Brain Natriuretic Peptide (SH #239, EPIC #LAB106)

Specimen Requirements: Draw one green top Lithium heparin plasma separator tube.

New Interpretive Ranges:

Age Rule in Heart Failure Cutpoint (ng/L)
< 50 450
50 – 75 900
> 75 1800

These changes have been reviewed by cardiology leadership. For more information, please contact David Alter, MD, via the “Contact Us” link.

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