Guide to Diagnostic Tests
Complement C4
Test/Range/Collection
Complement C4, serum or plasma
15–45 mg/dL
[150–450 mg/dL]
(age-dependent)
SST, lavender, green
$$
Separate serum from cells ASAP or within 2 hrs of collection.
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Citation
Nicoll, Diana, et al. "Complement C4." Guide to Diagnostic Tests, 7th ed., McGraw-Hill Education, 2017. Emergency Central, emergency.unboundmedicine.com/emergency/view/GDT/619107/all/Complement_C4.
Nicoll DD, Lu CMC, McPhee SJS. Complement C4. Guide to Diagnostic Tests. McGraw-Hill Education; 2017. https://emergency.unboundmedicine.com/emergency/view/GDT/619107/all/Complement_C4. Accessed November 3, 2025.
Nicoll, D., Lu, C. M., & McPhee, S. J. (2017). Complement C4. In Guide to Diagnostic Tests (7th ed.). McGraw-Hill Education. https://emergency.unboundmedicine.com/emergency/view/GDT/619107/all/Complement_C4
Nicoll DD, Lu CMC, McPhee SJS. Complement C4 [Internet]. In: Guide to Diagnostic Tests. McGraw-Hill Education; 2017. [cited 2025 November 03]. Available from: https://emergency.unboundmedicine.com/emergency/view/GDT/619107/all/Complement_C4.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Complement C4
ID - 619107
A1 - Lu,Chuanyi Mark,
AU - Nicoll,Diana,
AU - McPhee,Stephen J,
BT - Guide to Diagnostic Tests
UR - https://emergency.unboundmedicine.com/emergency/view/GDT/619107/all/Complement_C4
PB - McGraw-Hill Education
ET - 7
DB - Emergency Central
DP - Unbound Medicine
ER -
