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Conversions and Calculations

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Useful Abbreviations

 
a.c.before meals
p.c.after meals
POby mouth
IMintramuscular
SQ or SCsubcutaneous
IV intravenous
BWbody weight
IPintraperitoneal
susp. suspension
gtts drops
gm gram
mg milligram
ug or mcgmicrogram
grgrain
cccubic centimeter
mlmilliliter
tabtablet
Tbsptablespoon
tspteaspoon
h or hrhour
SIDonce a day
BIDtwice a day
TIDthree times a day
q4hevery 4 hours
h.s.at bedtime
prnas needed


Weight Equivalents

1 lb = .454 kg = 454 gm = 16 oz
1 kg = 2.2 lbs = 1000 gms  
1 gr. = 64.8 mg. 
1 mg = 1000 mcg (ug) 
1 mcg = 1000 ng (nanograms) 
1 oz = 28.4 gms  
1 gm = 1000 mg = 15 gr = 0.0022 lbs
0.05 gm = 50 mg = 3/4 gr 
0.03 gm = 30 mg = 1/2 gr 
0.015 gm = 15 mg = 1/4 gr 
0.001 gm = 1 mg = 1/80 gr 


Sample Weight Conversions

To convert kilograms (kg) to pounds (lbs): Multiply the number of kilograms by 2.2
Example:
2 kgx2.2 =4.4 lbs
5 kgx2.2 =11 lbs
 
To covert pounds (lbs) to kilograms (kg) can be done either of two different ways:
——Divide the number of pounds by 2.2
Example:
2 lbs/2.2 =0.9 kg
2.2 lbs/2.2 =1 kg
——Multiply the number of pounds by 0.454
Example:
2 lbs/0.454 =0.9 kg
2.2 lbs/0.454 =0.99 or 1.0 kg (if rounding off)
 
To convert grams (g) or (gm) to pounds (lb). Multiply the number of grams by 0.0022
Example:
454 gmx0.0022 =0.99 lb or 1.0 lb (if rounding off)
Example:
1000 gmx0.0022 =2.2 lbs
 
To convert pounds (lb) to grams (gm) or (g). Multiply the number of pounds by 454
Example:
2 lbsx454 =908 gm


Volume Equivalents

1 gal = 4 qts = 8 pts = 128 fl oz = 3.785 L = 3785 mL
1 qt = 2 pts = 32 fl oz = 946 mL 
1 pt. = 2 L = 16 fl oz = 473 mL 
1 c = 8 fl oz = 240 mL = 16 Tb (tablespoons)
1 fl oz.=30 mL
1 Tb = 15 mL = 3 tsp (teaspoon)  
1 tsp = 5 mL  
4 L = 1.057 gal  
2 gtts (drops)= 0.1 mL
1 qtt (drop)=0.05 mL
  


Calculation Setups

 
Need a little help in figuring the dosage or volume needed? Here are a couple of formulas for you to follow.
I also find that the second formula helps when you wish to know correct dose per weight. See the second example in the second formula.
First Formula:
(desired)/ availablex volume =what you will give
Second Formula:
(mg avail)/ in mL availx(mg wanted)/ ? mL =mL you will give
(recommended dosage)/ recommended weight=(? desired dosage)/ your rat’s weight

Posted on June 20, 2003, 15:58, Last updated on April 12, 2010, 11:46 | Reference



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