Guide to Diagnostic Tests
Heparin anti-Xa assay, chromogenic
Test/Range/Collection
Heparin anti-Xa assay, chromogenic, plasma
Undetectable (< 0.05 U/mL)
Blue
$$
Separate plasma from cells within 1 hr, and as needed freeze plasma for storage and shipment.
There's more to see -- the rest of this topic is available only to subscribers.
Citation
Nicoll, Diana, et al. "Heparin anti-Xa Assay, Chromogenic." Guide to Diagnostic Tests, 7th ed., McGraw-Hill Education, 2017. Emergency Central, emergency.unboundmedicine.com/emergency/view/GDT/619169/all/Heparin_anti_Xa_assay__chromogenic.
Nicoll DD, Lu CMC, McPhee SJS. Heparin anti-Xa assay, chromogenic. Guide to Diagnostic Tests. McGraw-Hill Education; 2017. https://emergency.unboundmedicine.com/emergency/view/GDT/619169/all/Heparin_anti_Xa_assay__chromogenic. Accessed November 3, 2025.
Nicoll, D., Lu, C. M., & McPhee, S. J. (2017). Heparin anti-Xa assay, chromogenic. In Guide to Diagnostic Tests (7th ed.). McGraw-Hill Education. https://emergency.unboundmedicine.com/emergency/view/GDT/619169/all/Heparin_anti_Xa_assay__chromogenic
Nicoll DD, Lu CMC, McPhee SJS. Heparin anti-Xa Assay, Chromogenic [Internet]. In: Guide to Diagnostic Tests. McGraw-Hill Education; 2017. [cited 2025 November 03]. Available from: https://emergency.unboundmedicine.com/emergency/view/GDT/619169/all/Heparin_anti_Xa_assay__chromogenic.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Heparin anti-Xa assay, chromogenic
ID - 619169
A1 - Lu,Chuanyi Mark,
AU - Nicoll,Diana,
AU - McPhee,Stephen J,
BT - Guide to Diagnostic Tests
UR - https://emergency.unboundmedicine.com/emergency/view/GDT/619169/all/Heparin_anti_Xa_assay__chromogenic
PB - McGraw-Hill Education
ET - 7
DB - Emergency Central
DP - Unbound Medicine
ER -
