Table 3. Results of specificity, linearity, and range for the anti-Xa factor potency assay of enoxaparin sodium.

Solution	Labeled activity (IU/mL)	Absorbance	Comparison	Correlation coefficient R
B	Matrix: pH 7.4 buffer	0.9457	/	/
SCMax	0.192	0.2429	/	y = −0.75730x−0.30533 R = 0.9987
S1	0.16	0.2868	/
S2	0.12	0.3898	/
S3	0.09	0.4969	/
S4	0.0675	0.5860	B > S4
SCMin	0.054	0.6469	B > SCMin
T4	/	0.5732	B > T4	/