RBC Counts + Indices

• RBC Count Estimate: PCV/6 (answer * 10⁶/mcl)
• HGB Concentration: PCV/3
• MCV: PCV/RBC * 10 (fl)
• MCH: HGB/RBC * 10 (pg)
• MCHC: HGB/PCV * 100 (g/dl)
• Platelet Count: Average of 10 fields * 15,000

White Blood Cells

• WBC Count: Average # of WBCs in 10 fields * 2500
• Differential/Relative Count: Different morphology out of 100 WBC, % of each type of WBC present in the blood
• Corrected WBC Count: Automated WBC Count * [100 / (nRBC + 100)]
• Absolute Count: Relative Values / 100 * manual WBC count

Centrifugation Rates

• Fecal: 1300 rpm
• Urine: 1600 rpm
  
• Blood: 3000 rpm
  

Conversions

• C1V1=C2V2
• Unit 1 x (Unit 2/Unit)
  
  • ​Example: 1 g x (1000 mg/1 g)
    

Unit Conversions

• 1 lb. = 2.2 kg

Drip Rate Formulas

• Rehydration (R): % dehydrated * pt weight in kg * 1000 (mL/24 hours)
• Maintenance (M) (Adult): 50mL/kg (mL / 24 hours)
• Maintenance (M) (Young): 110mL/kg (mL / 24 hours)
• Ongoing Fluid Loss (OFL): 1mL/lb/episode
• Total Fluids Needed: R + M + OFL= TFN
• Drip Rate: (volume * calibration) / time