RATIO

• Express the values with numerals separated by a colon.
• do not replace the colon with a virgule, dash, hyphen, or other mark.
E.g. Mycoplasma 1:2
cold agglutinins 1:4
Zolyse 1:10,000
Xylocaine with epinephrine 1:200,000

• Use to or a hyphen instead of a colon when the expression includes words or letters instead of values.