Guide to Diagnostic Tests
C1 esterase inhibitor (C1-INH)
Test/Range/Collection
C1 esterase inhibitor (C1 INH), serum
20-40 mg/dL (antigenic); >68% of normal (functional)
(method-dependent)
SST
$$
Separate serum from cells ASAP or within 2 hrs of collection, and freeze if test cannot be performed within 2 hrs.
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Citation
Nicoll, Diana, et al. "C1 Esterase Inhibitor (C1-INH)." Guide to Diagnostic Tests, 7th ed., McGraw-Hill Education, 2017. Medicine Central, im.unboundmedicine.com/medicine/view/GDT/619088/all/C1_esterase_inhibitor__C1_INH_.
Nicoll DD, Lu CMC, McPhee SJS. C1 esterase inhibitor (C1-INH). Guide to Diagnostic Tests. McGraw-Hill Education; 2017. https://im.unboundmedicine.com/medicine/view/GDT/619088/all/C1_esterase_inhibitor__C1_INH_. Accessed July 17, 2025.
Nicoll, D., Lu, C. M., & McPhee, S. J. (2017). C1 esterase inhibitor (C1-INH). In Guide to Diagnostic Tests (7th ed.). McGraw-Hill Education. https://im.unboundmedicine.com/medicine/view/GDT/619088/all/C1_esterase_inhibitor__C1_INH_
Nicoll DD, Lu CMC, McPhee SJS. C1 Esterase Inhibitor (C1-INH) [Internet]. In: Guide to Diagnostic Tests. McGraw-Hill Education; 2017. [cited 2025 July 17]. Available from: https://im.unboundmedicine.com/medicine/view/GDT/619088/all/C1_esterase_inhibitor__C1_INH_.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - C1 esterase inhibitor (C1-INH)
ID - 619088
A1 - Lu,Chuanyi Mark,
AU - Nicoll,Diana,
AU - McPhee,Stephen J,
BT - Guide to Diagnostic Tests
UR - https://im.unboundmedicine.com/medicine/view/GDT/619088/all/C1_esterase_inhibitor__C1_INH_
PB - McGraw-Hill Education
ET - 7
DB - Medicine Central
DP - Unbound Medicine
ER -
