Lab Medicine

The number of NEW cases of a disease that develop in a population in a specific time period.

Proportion of a particular population affected by a medical condition at a specific time.

the number of new cases of diabetes in a new year would be called the

The population living with diabetes would be the

The proportion of persons with disease in whom the test is positive.

The ability of a test to detect a disease in a true positive person

The proportion of persons without a disease that the test will be negative

The chance that a test will be a true negative in individuals that do not have a disease

Formula for sensitivity

Formula for specificity

Percentage of patients with a positive test who truly have the disease

Forumula for PPV

Forumla for NPV

Used to detect a potential health problem or disease that doesnt yet have signs or symptoms ( or that is early in development)

Test used to confirm diseases

Screening test must have a high _____

Reference range is within how many SD’s

2 SD’s account for what portion of a population

Results that are in the life threatening range. May be truly abnormal or the result of a problem with the sample

Represents the difference between a patient’s current result and the previous result.

Main part of the red blood cell that carries oxygen

Ratio of the volume of erythrocytes to that of the whole blood

____ , should be three times that of, ___

Hb stands for

Hct stands for

New borns have an elevated level of ____ (abbreviation)

Females have lower levels of __ (ab) due to menses and lower testosterone

MCV stands for

Mean volume of a RBC

Increased MCV is defined as

Normal MCV is defined as

Decreased MCV is defined as

MCH stands for

Contents of Hb in the average RBC

MCHC stands for

Average concentration of Hb in a given volume of packed RBC’s

RDW stands for

Measures the RBC size variation

RDW is only signifiant if ______

A high RDW is associated with ____

Too little MCH/ MCHC

If a RBC has a central pallor of 1/3 of diameter of cell, it is considered

Low MCV is called

Low MCH is called

Plasma volume can cause anemia due to what effect?

Most common cause of microcytic anemia

Red blood cells are smaller than normal are called

When greater than 1/3 of diameter is clear, it is called

Two causes of normocytic anemia

Test used to see how well the body is responding to anemia

A high retic count greater than 3% suggest

Low retic count less than 3% suggest

If RBC’s lack central pallor, it is called

Macrocytes are associated with

Macrocytosis is associated with

b 12 or and or folic acid def is associated with

The appearance of macro-ovalocytes is associated with

Newly released erythrocytes that become mature RBC’s in 24 hours

Detected in peripheral blood with supravital stain

What does a supravital stain detect?

Erythrocytosis is defined as

Increased red cell mass due to increased production

Chronic hypoxemia, blood doping and EPO from a tumor can all causes

RBC’s that are even younger than reticulocytes

Corrected retic count formula