血沉

血沉	xuè chén	erythrocyte sedimentation rate (ESR)
血	xuè	blood (CL:滴) / colloquial pr. [xie3] or [xue3]
沉	chén	variant of 沉
沉	chén	to submerge / to immerse / to sink / to keep down / to lower / to drop / deep / profound / heavy