Laboratory Medicine

Test catalogue

NT-proBNP
Test Name NT-proBNP
Specimen Type / Requirements Container Type = 1 Gold Top (SST) Minimum Testing Volume = 0.5 mL serum Alternate sample type = plasma (LiHep) Tube must fill to at least ½ or greater of its vacuum capacity
Specimen Handling Collection Instructions: Collect sample in red or gold top container with or without gel separator. Heparin plasma is also acceptable specimen type. Write your initials, date and time of collection on the collection label or requisition. Laboratory Staff Instructions: Separate serum from cells as soon as possible. Rejection Criteria: Unlabeled or samples of non sufficient quantity. Stability: Stable at room temperature for 3 days, refrigerated for 6 days and frozen at -20°C for 24 months Transportation: Send sample to core lab as soon as possible.
Required Documentation
Turnaround Time (TAT) STAT: 1 hour Routine: 2 hours
Reference Value Acute care setting: < 50 years: < 450 ng/L 50-75 years: < 900 ng/L >75 years: < 1800 ng/L	Ambulatory care setting: < 50 years: < 125 ng/L 50-75 years: < 250 ng/L >75 years: < 500 ng/L
Test Code LAB106	Methodology Sandwich Immunoassay
Testing Location SMH-Biochemistry	Other Information Last Updated: June 22, 2026

NT-proBNP

Test Name

NT-proBNP

Specimen Type / Requirements

Container Type = 1 Gold Top (SST)

Minimum Testing Volume = 0.5 mL serum

Alternate sample type = plasma (LiHep)

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Collect sample in red or gold top container with or without gel separator. Heparin plasma is also acceptable specimen type. Write your initials, date and time of collection on the collection label or requisition.

Laboratory Staff Instructions: Separate serum from cells as soon as possible.

Rejection Criteria: Unlabeled or samples of non sufficient quantity.

Stability: Stable at room temperature for 3 days, refrigerated for 6 days and frozen at -20°C for 24 months

Transportation: Send sample to core lab as soon as possible.

Required Documentation

Turnaround Time (TAT)

STAT: 1 hour

Routine: 2 hours

Reference Value

Acute care setting:

< 50 years: < 450 ng/L

50-75 years: < 900 ng/L

>75 years: < 1800 ng/L

Ambulatory care setting:

< 50 years: < 125 ng/L

50-75 years: < 250 ng/L

>75 years: < 500 ng/L

Test Code

LAB106

Methodology

Sandwich Immunoassay

Testing Location

SMH-Biochemistry

Other Information

Last Updated: June 22, 2026