Lab Math
Formulas
Solutions
Statistics
Miscellaneous
100
What is the formula for transmittance
% T = (I)/(Io)
100
What is the formula for transferrin saturation?
=(Serum Iron/TIBC) x 100
100
How many mL of a 5M solution to make 250 mL of a 2M solution?
100 mL
100
Which giant microbe is this?
TB
100
What is the formula for specificity?
(TN/ (TN + FP)
200
How is equivalent weight calculated
Molecular weight/ positive valance
200
??
Strep pyogenes
200
What is the molality of a solution of 116 g NaCl in 1 kg water? Molecular weight is 58g
2
200
What is the formula for standard deviation?
200
??
rhinovirus
300
???
RNA
300
What is the formula for negative predictive value?
NPV= TN / (TN+FN)
300
A 0.5% solution contains how much solute?
5 grams, assuming 100 mL of solution
300
Random error describes points that are:
a. consistently above the mean
b. above or below the mean
c. above or below the mean, by the same percent
b
300
How is LDL calculated?
LDL= TC - (HDL)- (Triglycerides/5)
400
In a normal distribution, how much of the data is included in the following standard deviations:
1SD, 2SD, 3SD
1SD = 68%
2SD= 95%
3SD= 99%
400
What is the osmolality formula?
Osmolality = [1.86 x Na] + [Glu / 18] + [BUN / 2.8]
400
What is the formula for normality?
Number of gram equivalent/ liters solution
400
Coefficient of variation= standard deviation / __
SD/ (mean*100)
400
????
Measles
500
What is the formula for absorbance, using I and Io?
A = Log (Io/ I)
500
What is the creatinine clearance formula?
C = U*V/P
U= urine creatinine
P= plasma creatinine
V= volume/min
500
?????
Syphillis
500
What are the three methods of central tendancy?
mean, median, mode
500
If a control is run with a mean of 12 and a SD of 2, what is the acceptable 96% range?
8-16