tests

Question 1

causes of false positive syphilis test

Answer 1

Other antibodies not specific to Treponema pallidum (the bacteria that causes syphilis).
Autoimmune diseases such as systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and antiphospholipid syndrome (APS).
Infections, pregnancy, IV drug use, tuberculosis, chronic liver disease, recent vaccines, or inflammation of the heart lining or valves.

Question 2

maximum level of progesterone is found at what stage of pregnancy

Answer 2

term

Question 3

body ache, malaise. only abnormal blood test is raised ALP (and not pregnant). What is the diagnosis?

Answer 3

Vitamin D deficiency

Question 4

What is the name of the thermostable DNA polymerase extracted from the thermophilic bacteria Thermus aquaticus, widely used in the polymerase chain reaction (PCR) technique for amplifying specific DNA sequences?

Answer 4

taq polymerase

(from ‘Thermus AQuaticus’)

Question 5

daily sperm production

Answer 5

300 million

Question 6

how to calculate number needed to treat

Answer 6

1 / absolute risk ratio
(ARR = %control event ratio - %experimental event ratio)

Question 7

how do you calculate the interquartile range?

Answer 7

third quartile minus first quartile
Q3 - Q1

Question 8

what is variance?

Answer 8

The variance is a figure that represents how far the data in your sample is clustered around the mean
It is calculated from sum of squares / (n-1)

(sum of squares = sum ((each value - mean)^2))

Question 9

how to calculate standard deviation from variance

Answer 9

sd = square root of the variance

Question 10

T4:T3 ratio secreted from the healthy human thyroid gland is…

Answer 10

approximately 15:1