0–100 pg/mL SI units: 0–100 ng/L
. Lavender-top plastic tube. Put on ice immediately. Specimen may
need to be fasting; check with lab.
■ Secreted by ventricular myocardium; acts as a vasodilator and
increases renal excretion of sodium and water.
■ Suppresses sympathetic tone and the renin-angiotensin
system.
■ Aids in the diagnosis of CHF.
