Pharmacy Calculations for Pharmacy Technicians

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As with any subject, you must master some basic material before you can tackle the main subject. The following topics are cover in Unit 1.

  • The Metric System
  • Apothecary / Avoirdupois / Household Systems
  • Ratios
  • Dimensional Analysis and Ratio Proportion      
  • Rounding Numbers

Unit 2: Auxiliary Subjects

Unit 2 covers a few subjects which you may or may not need, depending on your school and / or practice.

  • Scientific Notation
  • Significant Figures
  • Roman Numerals

Unit 3: Unit Conversions

Converting between the various units of measurements used in pharmacy is an essential skill and mastering this unit will set you up for success in the more complex calculations.

  • Unit Conversions-The Basics    
  • Unit Conversions Within the Metric System     
  • Unit Conversions Within the Household System           
  • Unit Conversions Between Metric, Household and Apothecary 
  • Unit Conversions Involving Hours and Minutes 

Unit 4: Dosage Calculations

This unit starts by covering the terminology then moves on to the various ways to set up and solve the problems. Three levels of problems follow, starting with easy, one-step problems, and moving on to more complex problems.

  • Dosage Calculations-The Basics
  • Dosage Calculations Levels 1, 2, and 3  
  • Body Surface Area Dosing Calculations

Unit 5: IV Flow Rate Calculations

As with the dosage calculation unit, this unit starts off with the basics then moves on to calculations, starting with easy calculations and progressing to more complex calculations.

  • IV Flow Rate Calculations-The Basics
  • IV Flow Rate Calculations Level 1 and 3
  • IV Flow Rate Adjustments        

Unit 6: Percent and Ratio Strength Calculations

As a pharmacy technician, you will encounter drugs expressed in a percent strength every day and it is important that you master this unit.

  • Percent
  • Percent Strength         
  • Percent Error   
  • Ratio Strength 

Unit 7: Concentrations / Dilutions / Reconstitution Calculations

No pharmacy calculation course would be complete without a section on concentrations and dilutions. The knowledge gained in the previous unit will come in handy here.

  • Concentrations and Dilutions
  • Powder Volume Calculations
  • Serial Dilution

Unit 8: Miscellaneous Subjects

Be sure to take the self-assessment exam and work on any problem areas.

  • Milliequivalent Calculations     
  • Temperature Conversion Calculations
  • Pharmacy Calculation Puzzles  
  • Self-Assessment Exam
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