What is the number of units corresponding to 0.5 mg and 1 mg of a medication with a concentration of 1.34 mg per 100 units?

Dosage Calculation for 1.34 mg per 100 Units

For 0.5 mg: approximately 37 units; for 1 mg: approximately 75 units.

Mathematical Calculation

The concentration ratio is 1.34 mg per 100 units, which can be expressed as:

• 1 unit = 0.0134 mg 1

Using this conversion factor:

For 0.5 mg dose:

• 0.5 mg ÷ 0.0134 mg/unit = 37.3 units (round to 37 units) 1

For 1 mg dose:

• 1 mg ÷ 0.0134 mg/unit = 74.6 units (round to 75 units) 1

Verification Using Proportion Method

An alternative calculation method confirms these values 1:

• If 100 units contains 1.34 mg
• Then X units contains 0.5 mg
• X = (0.5 mg × 100 units) ÷ 1.34 mg = 37.3 units 1

Similarly for 1 mg:

• X = (1 mg × 100 units) ÷ 1.34 mg = 74.6 units 1

Critical Safety Considerations

Never dilute any injectable medication without verified manufacturer instructions, as improper dilution can lead to precipitation, inactivation, or toxicity 1. Always verify the generic name of the product, as brand names may vary by country or region 1.

Standard dilution ratios, compatible diluents, final concentration ranges, administration rate, and storage requirements should be obtained from the manufacturer or official prescribing information before preparing any medication 1.