Sensitivity, Specificity
These types of tests are best for diagnosis
What are highly specific tests?
This is a primary disorder of the blood that can be detected with CBC (one example)
What is Leukopenia, Leukocytosis, Neutropenia, Neutrophilia/ “Bandemia”, Pancytopenia, Pancytosis, Anemia, Thrombocytopenia, Thrombocytosis?
This carries oxygen to the tissue cells and removes carbon dioxide
What is hemoglobin?
This is primarily involved in acid-base regulation
What is bicarbonate?
This is a fast, high-resolution, and relatively inexpensive way to look for a small bowel obstruction
What is XR (plain film)?
These tests are best for screening
What are highly sensitive tests?
This enumerates the types of white blood cells
What is the differential?
This is the term for RBC destruction
What is hemolysis?
This is typically elevated at 2 or 3:1 in alcoholics
What is aspartate aminotransferase (AST)?
A patient with a pacemaker may not be able to have this imaging study
What is MRI?
A highly specific test will have this type of predictive value
What is positive predictive value?
This is the largest WBC
What is macrophage?
A platelet count of 200,000 is considered this
This is ONLY excreted by the kidneys and as such is a rough estimate of renal function
What is creatinine?
This limits the ability to use iodinated contrast in CT
What is abnormal renal function (AKI, CKD)?
A d dimer is this type of test when evaluating for PE
What is a sensitive test?
A white blood cell count of 2300 is also called this
What is leukopenia?
One type of normocytic anemia
What is hemorrhagic, hemolytic, or anemia of chronic disease?
The intracellular:extracellular ratio of this cation is essential for cell metabolism, neuromuscular, and cardiac transmission
What is potassium?
This is a potentially fatal complication of gadolinium
What is Nephrogenic Systemic Fibrosis?
Lipase is an example of a this type of test when concerned about pancreatitis
What is a specific test?
This phenomenon is often seen in acute bacterial infections
What is bandemia, neturophilia (increase in total neutrophil count), or left shift (specifically bands/immature neutrphils)?
This is normally increased in pregnancy or hemolysis
What is reticulocyte count?
The liver incorporates these into a protein to allow normal coagulation
What are vitamin K metabolites?
This provides the finest exclusion of pulmonary embolism
What is VQ scan?