Which of the following require calcium for normal functioning the least?

Which of the following attributes is the most desirable for a laboratory test utilized in the diagnosis of diseases such as cystic fibrosis that are currently not curable?

If a normal distribution has a mean of 100 and a standard deviation of 20, what percentage of the data falls between 60 and 140?

In this data set the median is:  71 73 84  88 91 91 98 102 104 104 104 105 106 109 110 110 111 112 112 112 113 114      

In this data set the median is:  71 73 84  88 91 91 98 102 104 104 104 105 106 109 110 110 111 112 112 112 113 114      

A patient’s glucose result is “flagged” with the comment “ results exceed the upper limit of linearity.” The method’s upper limit of linearity is 700 mg/dL. The technologist prepares a 1 to 5 dilution of the serum specimen with saline and reanalyzes the diluted sample. A result, 152 mg/dL, is displayed. What is the concentration of glucose in this patent’s serum sample?

Which of the following statements correctly compares and contrasts a-priori and a-posteriori methods of reference individual selection? 1. In both methods, exclusion and partitioning take place after sampling and analyte testing. 2. A-priori methods require fewer reference individuals to be studied than a-posteriori methods. 3. Questionnaires for potential reference individuals must be more detailed for a-posteriori methods than for a-priori methods.

Which of the following is the correct sequence to follow in method selection?

Following breast cancer treatment 24 patients were monitored for plasma levels of the MUC-1 gene product antigen CA-27.29 to determine if high levels of antigen are associated with cancer reoccurence. Anything over 100 U/ml is considered a high level. Calculate the prevalence of reoccurence in our sample. Also calculate the sensitivity, specificity and the positive predictive value using 100U/mL as a cutoff. Cancer returned Cancer Free 110 84 102 98 95 52 112 104 89 94 115 91 103 66 94 85 101 90 109 92 84   105   111   75      

Distillation is effective at remove all of the following types of contamination except: