NT-proBNP (by ELFA) N端B型鈉尿呔	H057
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Specimen Required 3 mL Pl (1 mL serum)	Schedule Monday-Friday
Specimen Stability Ambient: 24 hr Refrigerated: 4 days Frozen: 1 month
Reference Interval Optimal cutoff values for acute heart failure (AHF): AHF unlikely < 300 pg/mL AHF less likely (consider alternative causes) < 50 years old 300-450 pg/mL 50 - 75 years old 300-900 pg/mL > 75 years old 300-1800 pg/mL AHF likely (consider confounding factors) < 50 years old >450 pg/mL 50 - 75 years old >900 pg/mL > 75 years old >1800 pg/mL
Reference Notes and Guidelines Click here for more details. Reference Notes and Guidelines 1. The ESC guidelines recommend 300 pg/mL as a single rule out cut-off for suspected heart failure patients presenting with acute symptoms. 2. The ESC guidelines recommend 125 pg/mL as single (age-independent) cut-off for exclusion of suspected heart failure in patients with non acute onset. In the same clinical setting, age-stratified decision limits (125 pg/mL for patients < 75 years old and 450 pg/mL for patients ≧ 75 years old) have been advocated to improve the loss of specificity in the elderly. 3. NT-proBNP concentrations must be interpreted in conjunction with the patient's previous history, physical examination or any other clinical data (e.g. medical imagery, analysis). Source: VIDAS‥ NT-proBNP2 reagent kit insert. BioMerieux. 9301622D-en-2015/01.

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