Table 1.

Stability of 25 mg/mL methotrexate solution for injection packaged in polypropylene syringes.

Time (days)	% of initial concentration remaining (mean ± SD; CV%) (n = 3)
	25 mg/mL	25 mg/mL
	23°C dark	+2 to +8°C dark
1	101.2 ± 1.6; 1.6	101.2 ± 0.3; 0.3
7	101.2 ± 0.3; 0.3	100.3 ± 1.0; 1.0
14	100.0 ± 1.0; 1.0	99.0 ± 2.3; 2.3
28	100.0 ± 0.8; 0.8	99.2 ± 0.3; 0.3
56	100.3 ± 0.8; 0.8	99.0 ± 0.5; 0.5
84	102.2 ± 1.1; 1.0	102.5 ± 2.3; 2.2