Table 4.

Results of tacrolimus and methotrexate in hemolysed and non-hemolysed sera along with the difference and the percentage difference in the values

Analyte	Sample number	Result in non hemolysed	Result in hemolysed	Difference between H and NH	% difference between H and NH	TEa	No. of results exceeding TEa
Tacrolimus (ng/mL)	1	2.5	2.5	0	0	24.1 µg/L	0
	2	6.7	6.6	0.1	1.5
	3	10.6	10.5	0.1	0.9
	4	20.1	18.2	1.9	9.5
	5	30	30	0	0
	Mean difference			0.43	2.38
Methotrexate (µmol/L)	1	0.619	0.617	0.002	0.3	10 µmol/L	0
	2	34	33.2	0.8	2.4
	3	33.2	36.8	3.6	10.8
	4	57.2	57.6	0.4	0.7
	5	218.4	220.4	2.0	0.9
	Mean difference			0.020	3.02

TEa is also given