Anti Xa‐HC activity HEM vs RIVA (ng/mL)	Anti Xa‐HC activity INN vs RIVA (ng/mL)	Anti XA‐HC activity STA vs RIVA (ng/mL)	Bland Altman Anti Xa‐HC U/mL HEM‐INN	Bland Altman Anti Xa‐HC U/mL HEM‐STA	Bland Altman Anti Xa‐HC U/mL INN‐STA
R 2	0.955	0.964	0.828	‐	‐	‐
Linear regression Slope (95%CI) (RIVA samples)	0.008 (0.007 to 0.009)	0.0086 (0.008 to 0.009)	0.010 (0.007 to 0.0129)	‐	‐	‐
Linear regression Y intercept (95%CI) (RIVA Samples)	‐0.112 (‐0.228 to 0.004)	‐0.081 (‐0.193 to 0.031)	0.348 (0.049 to 0.647)	‐	‐	‐
Bland Altman BIAS (95% CI) Anti Xa‐HC U/mL RIVA samples	‐	‐	‐	‐0.086 (‐0.126 to ‐0.046)	‐0.630 (‐0.854 to ‐0.406)	‐0.544 (‐0.765 to ‐0.322)
Bland Altman BIAS (95% CI) Anti Xa‐HC U/mL LMWH samples	‐	‐	‐	‐0.041 (‐0.097 to ‐0.014)	‐0.012 (‐0.088 to 0.065)	0.030 (‐0.028 to 0.088)