Math Vocab
Sig Figs
What the Graph?
Chemistry
Hematology
100
Identify the key term for variable c:
a + b = c
What is the sum?
100
Count the significant figures:
10.0
What is three?
100
This is equation of a straight line.
What is y = mx + b?
100
This equation is the mathematical relationship between absorbance, concentration, path length, and molar absorptivity.
What is Beer's Law?
or
What is Beer-Lambert Law?
or
What is A = e x c x l?
100
This is the volume whole blood occupied by packed RBCs and is expressed as a percentage.
What is hematocrit?
200
Identify the key term for b:
ab
What is an exponent?
200
Count the significant figures:
0.0035
What is two?
200
This is the independent variable.
What is x?
or
What is the x-axis?
200
Calculate the anion gap with and without potassium with the following patient results:
Na = 140
K = 3.5
Cl = 105
Bicarb = 17
with K = Na + K - Cl - Bicarb
140 + 3.5 - 105 - 17 = 21.5 = 22
without K = Na - Cl - Bicarb
140 - 105 - 17 = 18
What is 22 with potassium and 18 without?
200
Calculate the MCV given the following patient results:
Hct = 36.9%
Hgb = 12.4
RBC count = 4.6 x 106
MCV = (Hct/RBC) x 10
= (36.9/4.6) x 10
= 8.02 x 10
What is 80?
300
This key term means agreement among repeated measurements.
What is precision?
300
Do the following calculation reporting the answer with correct number of significant figures and unit(s):
15.5 mL of solution + 25.92 mL of solution
= 41.42 mL of solution
What is 41.4 mL of solution?
300
Identify all the variables is the equation of a straight line.
What is m as the slope?
What is b as the y-intercept?
What is x as the x point of an ordered pair?
What is y as the y point of an ordered pair?
300
Calculate the osmolality gap given the following patient information:
Na = 143
Gluc = 104
BUN = 4
Measured Osmolality = 301
CO = 2(Na) + (1.15 x gluc/18) + BUN/2.8
= 294
OG = MO - CO
= 301 - 294 = 6.92
What is 7?
300
Calculate the MCH and the MCHC given the following patient results:
Hct = 36.9%
Hgb = 12.4
RBC count = 4.6 x 106
MCH = (Hgb/RBC) x 10
= (12.4/4.6) x 10
= 2.70 x 10
What is 27 for the MCH?
MCHC = (Hgb/Hct) x 100
= (12.4/36.9) x 100
= 0.336 x 100
What is 34 for the MCHC?
400
This key term refers to the amount of substance consisting of as many entities (molecules, ion, particles, etc.) as there are atoms in exactly 12 g of the element carbon.
What is a mole?
or
What is Avogadro's number?
400
Do the following calculation reporting the answer with the correct number of significant figures and unit(s):
2.0 mL x 0.629 g/mL
= 1.258 g
What is 1.3 g?
400
Calculate the slope of a straight line from the ordered pair data points below:
(0,2); (1,4); (2,6); (3,8); (4,10); (5,12); (6,14); (7,16); (8,18); (9,20); (10,22)
m = delta y/delta x
= (22 - 2)/(10 - 0)
= 20/10 -> 2
What is 2?
400
Calculate the LDL given the following patient results:
Total cholesterol = 269
HDL = 30
Trig = 185
LDL = Total cholesterol - HDL - (Trig/5)
= 269 - 30 - (185/5)
What is 202?
400
A patient on warfarin had a prothrombin time of 25.2 seconds. The laboratory’s mean PT value is 12.7, and the ISI value for the thromboplastin used in the prothrombin assay is 1.287. Calculate the INR value for this patient.
INR = (Patient PT value/Labs PT value)ISI
= (25.2/12.7)1.287
What is 2.4?
500
This key term is the ratio of density of a solution to the density of water at 4oC.
What is specific gravity?
500
Do the following calculation with proper rounding at each step and reporting the answer with the correct number of significant figures:
(0.079 x 3.982) + 91.8042
= 0.314578 -> 0.31
0.31 + 91.8042 = 92.1142
What is 92.11?
500
If the x-axis represents the concentration and the y-axis represents time in seconds, determine the time in seconds if the concentration is 0.7.
m = delta y/delta x
(100 - 20)/(0 - 1.6) = 80/-1.6 -> -50
y = -50x + 100
y = -50(0.7) + 100 -> y = -35 + 100
What is 65 seconds?
500
Calculate the creatine clearance, without correction for body mass, with the following patient results:
total volume for 24 hours = 2200 mL
urine creatinine = 80
plasma creatinine = 1.2
creatinine clearance = (urine creatinine x urine volume)/plasma creatinine
2200/(24 x 60) = 1.53
= (80 x 1.53)/1.2 = 101.85
What is 102?
500
A manual WBC count was done on a hemacytometer with a 1/100 dilution. 145 cells were counted on one side and 149 cells were counted on the other side using the four large squares.
Determine the actual WBC count.
WBC count = (avg cells counted x dilution factor)/ total volume
= (147 x 100)/0.4
What is 36,750?