Table 12.

Percentage^a of the opium alkaloid to the sum of morphine, codeine and thebaine per sample

Substance	Origin	N	Percentagea of the opium alkaloid to the sum
			Mean	Min	P25	Median	P75	P95	Max
Morphine	‘High‐morphine’	119	50.6	0.13	6.6	70.0	80.0	97.6	98.5
	‘Low‐morphine’	935	76.4	28.4	71.0	78.5	83.8	91.7	97.4
	Unknown	143	77.3	22.6	74.3	79.8	84.4	92.2	97.1
	Total	1,197	73.9	0.13	70.3	78.0	83.9	92.6	98.5
Codeine	‘High‐morphine’	119	8.88	0.1	0.7	4.0	10.6	19.9	92.6
	‘Low‐morphine’	935	11.6	0.8	8.1	10.5	13.9	22.7	35.7
	Unknown	143	11.6	1.7	6.7	9.3	12.9	32.0	52.7
	Total	1,197	11.3	0.1	7.6	10.2	13.5	22.8	92.6
Thebaine	‘High‐morphine’	119	40.5	1.26	9.7	19.2	89.4	98.6	99.4
	‘Low‐morphine’	935	12.1	0.12	6.8	10.5	15.9	26.0	58.0
	Unknown	143	11.1	< 0.1	6.4	10.0	14.2	24.7	32.6
	Total	1,197	14.8	< 0.1	6.8	10.8	16.6	37.2	99.4

N: number of samples; Max: maximum; Min: minimum; P: percentile.

^aCalculated by dividing the opium alkaloid upper bound concentration by the sum of the upper bound concentration of morphine, codeine and thebaine, per sample morphine upper bound concentration. Concentrations were expressed as mmol/kg.