Guide to Diagnostic Tests
Metanephrines, free (unconjugated), plasma
Test/Range/Collection
Metanephrines , free (unconjugated), plasma
Metanephrine, free: < 0.50 nmol/L
Normetanephrine, free: < 0.9 nmol/L
Lavender, green
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Collect specimen after at least 30 min rest. Place specimen tube on ice, centrifuge within 1 hour, separate plasma and freeze immediately.
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Citation
Nicoll, Diana, et al. "Metanephrines, Free (unconjugated), Plasma." Guide to Diagnostic Tests, 7th ed., McGraw-Hill Education, 2017. Anesthesia Central, anesth.unboundmedicine.com/anesthesia/view/GDT/619227/all/Metanephrines__free__unconjugated___plasma.
Nicoll DD, Lu CMC, McPhee SJS. Metanephrines, free (unconjugated), plasma. Guide to Diagnostic Tests. McGraw-Hill Education; 2017. https://anesth.unboundmedicine.com/anesthesia/view/GDT/619227/all/Metanephrines__free__unconjugated___plasma. Accessed April 18, 2025.
Nicoll, D., Lu, C. M., & McPhee, S. J. (2017). Metanephrines, free (unconjugated), plasma. In Guide to Diagnostic Tests (7th ed.). McGraw-Hill Education. https://anesth.unboundmedicine.com/anesthesia/view/GDT/619227/all/Metanephrines__free__unconjugated___plasma
Nicoll DD, Lu CMC, McPhee SJS. Metanephrines, Free (unconjugated), Plasma [Internet]. In: Guide to Diagnostic Tests. McGraw-Hill Education; 2017. [cited 2025 April 18]. Available from: https://anesth.unboundmedicine.com/anesthesia/view/GDT/619227/all/Metanephrines__free__unconjugated___plasma.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Metanephrines, free (unconjugated), plasma
ID - 619227
A1 - Lu,Chuanyi Mark,
AU - Nicoll,Diana,
AU - McPhee,Stephen J,
BT - Guide to Diagnostic Tests
UR - https://anesth.unboundmedicine.com/anesthesia/view/GDT/619227/all/Metanephrines__free__unconjugated___plasma
PB - McGraw-Hill Education
ET - 7
DB - Anesthesia Central
DP - Unbound Medicine
ER -
