Guide to Diagnostic Tests
Carboxyhemoglobin (COHb)
Test/Range/Collection
Carboxyhemoglobin, whole blood (COHb, %)
<2% [non-smokers]
<9% [smokers]
Blood gas syringe or green
$$
Specimen should be collected before treatment with oxygen is started.
Do not remove stopper or cap. Refrigerate within 30 min after collection, if needed.
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Citation
Nicoll, Diana, et al. "Carboxyhemoglobin (COHb)." Guide to Diagnostic Tests, 7th ed., McGraw-Hill Education, 2017. Medicine Central, im.unboundmedicine.com/medicine/view/GDT/619095/all/Carboxyhemoglobin__COHb_.
Nicoll DD, Lu CMC, McPhee SJS. Carboxyhemoglobin (COHb). Guide to Diagnostic Tests. McGraw-Hill Education; 2017. https://im.unboundmedicine.com/medicine/view/GDT/619095/all/Carboxyhemoglobin__COHb_. Accessed May 14, 2025.
Nicoll, D., Lu, C. M., & McPhee, S. J. (2017). Carboxyhemoglobin (COHb). In Guide to Diagnostic Tests (7th ed.). McGraw-Hill Education. https://im.unboundmedicine.com/medicine/view/GDT/619095/all/Carboxyhemoglobin__COHb_
Nicoll DD, Lu CMC, McPhee SJS. Carboxyhemoglobin (COHb) [Internet]. In: Guide to Diagnostic Tests. McGraw-Hill Education; 2017. [cited 2025 May 14]. Available from: https://im.unboundmedicine.com/medicine/view/GDT/619095/all/Carboxyhemoglobin__COHb_.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Carboxyhemoglobin (COHb)
ID - 619095
A1 - Lu,Chuanyi Mark,
AU - Nicoll,Diana,
AU - McPhee,Stephen J,
BT - Guide to Diagnostic Tests
UR - https://im.unboundmedicine.com/medicine/view/GDT/619095/all/Carboxyhemoglobin__COHb_
PB - McGraw-Hill Education
ET - 7
DB - Medicine Central
DP - Unbound Medicine
ER -
