WSU SignatureWorld Class Face to FaceFuture StudentsWSU HomeWSU Search
CVM Home Main page of VM 552 Urogenital System Urogenital System header graphic

Table of Contents Cliend Education
 
  UG Home
  Notes
  Cases
  Quizzes & Exams
  Glossary
  Formulas
  Search
  CVM Home

   Print Version
Formulas and Measurements

Creatinine clearance

urine creatinine (mg/dl) x urine volume (mls/min) ¸ body weight (kg)
serum creatinine (mg/dl)

N = 2-4 ml/min/kg

Fractional phosphate excretion:

serum creatinine (mg/dl) X urine phosphorus (mg/dl)
urine creatinine (mg/dl) serum phosphorus (mg/dl)

N = 0.07 + .05

24 hour urine protein quantitation:

urine volume (ml/24 hrs) X urine protein concentration (mg/dl)
100

N = 14 + 8 mg/kg/day dog

N = 17 + 9 mg/kg/day cat

Urine protein:creatinine ratio

urine protein (mg/dl)
urine creatinine (mg/dl)

N <1

Water intake: 20-30 ml/lb/day (44-66 ml/kg/day)

Urine output: 12-24 ml/lb/day (20-44 ml/kg/day)

Insensible water loss: 1/2 ml/kcal/day (10-15 ml/lb/day)

Osmolality Calculation

Method one: 2 [Na+ (mEq/L)] + glucose (mg/dl) /18 + urea nitrogen (mg/dl)/2.8

Method two:  1.86 [Na+ + K+] glucose (mg/dl)/18 + urea nitrogen (mg/dl) / 2.8 +9

N = 280 - 310 mosmol/L

Adjusted serum calcium:  calcium (mg/dl) - albumin (mg/dl) + 3.5

Red Blood Cell Parameters

Mean corpuscular volume (MCV):

PCV x 10 = MCV (femtoliters)
RBC (millions)

N = 60 - 77 canine 39 - 53 feline

Mean corpuscular hemoglobin (MCH):

hemoglobin x 10 = MCH (picograms)
RBC (millions)

N = 19.5 - 24.5 canine 13-17 feline

Mean corpuscular hemoglobin concentration (MCHC):

hemoglobin x 100 = MCHC (g/dl)
PCV

N = 32 - 36 canine 30 - 36 feline

Absolute reticulocyte count

% reticulocytes x RBC (millions) = absolute count

> 70,000 indicates regeneration

Blood Volume:

40 mls/lb canine (90 ml/kg)

30 mls/lb feline (70 ml/kg)

Blood Transfusions:

ml of blood = recipient wt(kg) x   90 (dog) x   desired pcv - recipient pcv
  70 (cat) donor PCV

Fluid Deficit Calculation:

% deficit x body weight (kg) = liters of fluid to replace

Print Version

top of page
vm 551 SAM Urogenital System Home      |       College of Veterinary Medicine Home

Contact us: Webmaster |  509-335-9515 | Accessibility | Copyright | Policies
College of Veterinary Medicine,  Washington State University, Pullman, WA, 99164-7010 USA
Copyright Washington State University
Revised July 26, 2007