BOC Study Guide 5th edition (Clinical
Laboratory) Questions With Solved
Solutions.
Which action by the phlebotomist will comply with the College of American Pathologist patient safety
goal "to improve patient and sample identification at the time of specimen collection" and The Joint
Commission Patient Safety Goal to "improve the accuracy of patient identification"? - Answer Match
the name and medical record number on the patient's ID bracelet to the name and medical record
number on the preprinted collection label
A swab and requisition are received in the microbiology laboratory with the following information:
LABEL ON SPECIMEN
Patient name: Mary Jane Smith
MR#:400567
Location: emergency department
Doctor: Henry Jones
Specimen type: lesion on left ankle
Collection: @ 2pm by nurse MB
Requisition
Patient name: Nancy Ann Smith
MR#: 400443
Location: emergency department
Doctor: Henry Jones
Specimen type: lesion on left ankle
Collection: @ 2 pm by nurse MB
, The laboratory receiving clerk notes a discrepancy between the patient identifiers on the requisition and
the specimen label, and question the emergency department nurse MB. This is the fourth specimen this
week that has had a specimen discrepancy. What action is the most appropriate to prevent this type of
error in the future? - Answer Document error and communicate to laboratory supervisor so that the
risk manager conducts a root cause analysis
Preanalytical variables in laboratory testing include: - Answer Specimen acceptability
The first procedure to be followed of the blood gas instrument is out of control for all parameters is -
Answer Recalibrate, then repeat control
Refer to the following illustration:
Shown is a Levy- Jennings quality control chart, which represents control values for 13 consecutive
analyses for a particular serum constituent. If the 14th value is below the -2 SD limit, which of the
following should be done? - Answer Analysis system should be checked for deteriorating component
The mean value of a series of hemoglobin controls was found to be 15.2 g/dL, and the standard
deviation was calculated at 0.20. Acceptable control range for the laboratory is +2 standard deviations.
Which of the following represents the allowable limits for the control? - Answer 14.8 -15.6 g/dL
Upon completion of a run of cholesterol tests, the technician recognizes that the control is not within the
2 standard deviation confidence range. What is the appropriate course of action? - Answer Run a new
set of controls and repeat specimens
The following data were calculated on a series of 30 determinations of serum uric acid control: mean =
5.8 mg/dL , 1 standard deviation =0.15mg/dL. If confidence limits are set at +2 standard deviations,
which of the following represents the allowable limits for control? - Answer 5.50 -6.10 mg/dL
An index of precision is statistically known as the : - Answer Coefficient of variation
Laboratory) Questions With Solved
Solutions.
Which action by the phlebotomist will comply with the College of American Pathologist patient safety
goal "to improve patient and sample identification at the time of specimen collection" and The Joint
Commission Patient Safety Goal to "improve the accuracy of patient identification"? - Answer Match
the name and medical record number on the patient's ID bracelet to the name and medical record
number on the preprinted collection label
A swab and requisition are received in the microbiology laboratory with the following information:
LABEL ON SPECIMEN
Patient name: Mary Jane Smith
MR#:400567
Location: emergency department
Doctor: Henry Jones
Specimen type: lesion on left ankle
Collection: @ 2pm by nurse MB
Requisition
Patient name: Nancy Ann Smith
MR#: 400443
Location: emergency department
Doctor: Henry Jones
Specimen type: lesion on left ankle
Collection: @ 2 pm by nurse MB
, The laboratory receiving clerk notes a discrepancy between the patient identifiers on the requisition and
the specimen label, and question the emergency department nurse MB. This is the fourth specimen this
week that has had a specimen discrepancy. What action is the most appropriate to prevent this type of
error in the future? - Answer Document error and communicate to laboratory supervisor so that the
risk manager conducts a root cause analysis
Preanalytical variables in laboratory testing include: - Answer Specimen acceptability
The first procedure to be followed of the blood gas instrument is out of control for all parameters is -
Answer Recalibrate, then repeat control
Refer to the following illustration:
Shown is a Levy- Jennings quality control chart, which represents control values for 13 consecutive
analyses for a particular serum constituent. If the 14th value is below the -2 SD limit, which of the
following should be done? - Answer Analysis system should be checked for deteriorating component
The mean value of a series of hemoglobin controls was found to be 15.2 g/dL, and the standard
deviation was calculated at 0.20. Acceptable control range for the laboratory is +2 standard deviations.
Which of the following represents the allowable limits for the control? - Answer 14.8 -15.6 g/dL
Upon completion of a run of cholesterol tests, the technician recognizes that the control is not within the
2 standard deviation confidence range. What is the appropriate course of action? - Answer Run a new
set of controls and repeat specimens
The following data were calculated on a series of 30 determinations of serum uric acid control: mean =
5.8 mg/dL , 1 standard deviation =0.15mg/dL. If confidence limits are set at +2 standard deviations,
which of the following represents the allowable limits for control? - Answer 5.50 -6.10 mg/dL
An index of precision is statistically known as the : - Answer Coefficient of variation
