Laboratory Tests
(Inpatient)
AST
Definitions
Time of Collection
This test measures the levels of the enzyme, aspartate
aminotransferase (AST), in the blood 4.
Any lab test 30 days prior to the
Conventional unit: unit per liter
admission up to the date of discharge (U/L) 10
Albumin
This test measures the concentration of albumin in serum, the
clear liquid portion of blood 5.
Any lab test 30 days prior to the
Conventional unit: gram per
admission up to the date of discharge deciliter (g/dL) 10
Alkaline Phosphatase
This test measures the levels of the enzyme, (alkaline
phosphatase), in the blood $$.
Any lab test 30 days prior to the
Conventional unit: unit per liter
admission up to the date of discharge (U/L) **
Amylase
An amylase test measures the amount of this enzyme in a
sample of blood taken from a vein or in a sample of urine. **
Bicarbonate
Bilirubin Total
Units of Measure
Any lab test 30 days prior to the
Conventional unit: Blood-unit
admission up to the date of discharge per liter (U/L); Urine-unit per
hour (U/H) **
The CO2 test measures the total amount of carbon dioxide in the Any lab test 30 days prior to the
Conventional Unit:
blood. $$
admission up to the date of discharge milliequivalents per liter
(mEq/L) **
The Bilirubin test measures the amount of bilirubin in the blood. Any lab test 30 days prior to the
Conventional Unit: milligrams
$$
admission up to the date of discharge (mg) per deciliter (dL). **
BNP
"These tests measure the concentration of BNP or NT-proBNP in Any lab test 30 days prior to the
Conventional Unit: picograms
the blood." $$
admission up to the date of discharge per milliliter (pg/mL).**
Calcium
"A test for calcium in the blood checks the calcium level in the
body that is not stored in the bones." **
Any lab test 30 days prior to the
Conventional Unit: milligrams
admission up to the date of discharge (mg) per deciliter (dL). **
C-Reactive Protein
"C-reactive protein (CRP) is a substance made by the liver and
secreted into the bloodstream." $$ The test measures the
amount of CRP in the blood.
"Creatine kinase is an enzyme…" $$ The test measures the
amount of CPK in the blood.
Any lab test 30 days prior to the
Conventional unit: milligram per
admission up to the date of discharge liter (mg/L) **
Creatine Kinase (CPK)
Creatine Kinase MB
Creatinine
Any lab test 30 days prior to the
Conventional unit: micrograms
admission up to the date of discharge per liter (mcg/L). **
Any lab test 30 days prior to the
Conventional Unit: nanograms
"CK-MB is one of three separate forms of the enzyme creatine
kinase (CK)." $$ The test measures the amount of CK-MB in the admission up to the date of discharge (ng) per milliliter (mL). **
blood.
This test measures the concentration of creatinine in the blood 4. Any lab test 30 days prior to the
Conventional unit: milligram
admission up to the date of discharge per deciliter (mg/dL) 10
Glucose
This test measures the amount of glucose in the blood
Any lab test 30 days prior to the
Conventional unit: milligram
admission up to the date of discharge per deciliter (mg/dL) $$
Lactic Acid
This test measures the amount of Lactic Acid in the blood
Any lab test 30 days prior to the
Conventional Unit: milligrams
admission up to the date of discharge (mg) per deciliter (dL). **
Potassium
This test measures the concentration of potassium that is in the
blood 4.
Any lab test 30 days prior to the
Conventional unit: millimole
admission up to the date of discharge per liter (mmol/L) 11
Pro-BNP
"These tests measure the concentration of BNP or NT-proBNP in Any lab test 30 days prior to the
???
the blood." $$
admission up to the date of discharge
Sodium
This test measures the concentration of sodium that is in the
blood 4.
Troponin I
"This test measures the concentration of cardiac-specific troponin Any lab test 30 days prior to the
Conventional Unit: nanograms
in your blood." $$
admission up to the date of discharge (ng) per milliliter (mL). **
Troponin T
"This test measures the concentration of cardiac-specific troponin Any lab test 30 days prior to the
Conventional Unit: nanograms
in your blood." $$
admission up to the date of discharge (ng) per milliliter (mL). **
Urea Nitrogen (BUN)
The blood urea nitrogen (BUN) test measures the concentration Any lab test 30 days prior to the
Conventional unit: milligram
of urea nitrogen in the blood 5.
admission up to the date of discharge per deciliter (mg/dL) 10
Arterial O2 Saturation
"Blood gas measurements are used to evaluate your oxygenation
and acid/base status." $$ Sample obtained through an arterial
blood sample.
"The partial pressure of CO2 (the amount of carbon dioxide gas
dissolved in the blood;..." $$ Sample obtained through an arterial
blood sample.
"A measure of the hydrogen ion (H+), which indicates the
acid/base status of your blood;..." $$ Sample obtained through an
arterial blood sample.
"The partial pressure of O2 (the amount of oxygen gas dissolved
in the blood;..." $$ Sample obtained through an arterial blood
sample.
Part of an arterial blood gas. "A calculated number that
represents a sum total of the metabolic buffering agents (anions)
in the blood; these anions include hemoglobin, proteins,
phosphates, and HCO3- (bicarbonate, which is the dominant
anion); these anions try to compensate for imbalances in the
pH..." $$
Arterial pCO2
Arterial pH
Arterial pO2
Base Excess
Any lab test 30 days prior to the
Conventional unit: millimole
admission up to the date of discharge per liter (mmol/L) 11
Any lab test 30 days prior to the
Conventional Unit: mL per 100
admission up to the date of discharge mL of blood. **
Any lab test 30 days prior to the
Conventional Unit:
admission up to the date of discharge milliequivalents per liter
(mEq/L). **
Any lab test 30 days prior to the
admission up to the date of discharge
Any lab test 30 days prior to the
Conventional Unit: mm HG,
admission up to the date of discharge millimeters (mm) of mercury
(Hg).**
Any lab test 30 days prior to the
???
admission up to the date of discharge
Laboratory Tests
(Inpatient)
FIO2
Hemoglobin
INR
Neutrophil Bands
Definitions
Time of Collection
Units of Measure
Part of an arterial blood gas. "...the amount of oxygen ... (usually
expressed as fraction of inspired oxygen in percent..." $$ "The
concentration of oxygen being breathed, called the fraction of
inhaled oxygen…" **
This test measures the concentration of hemoglobin in the blood
5. Hematocrit measures the volume of red blood cells.
Any lab test 30 days prior to the
???
admission up to the date of discharge
Any lab test 30 days prior to the
Conventional units:
admission up to the date of discharge Hemoglobin is in gram per
deciliter (g/dL) 10.
Any lab test 30 days prior to the
???
admission up to the date of discharge
"The INR is a calculation that adjusts for changes in the PT
reagents and allows for results from different laboratories to be
compared. Most laboratories are now reporting both PT and INR
values whenever a PT test is performed." $$
This test measures the numbers of neutrophils that "..compose
Any lab test 30 days prior to the
Conventional Unit: % of WBCs.
the majority of WBCs in a healthy adult." $$
admission up to the date of discharge **
Partial Thromboplastin
Time
"Partial thromboplastin time (PTT) is a blood test that measures
the time it takes your blood to clot." **
Any lab test 30 days prior to the
Conventional Unit: Seconds **
admission up to the date of discharge
Platelet Count
This test measures the number of platelets in the blood 5.
Any lab test 30 days prior to the
Conventional unit: microliter
admission up to the date of discharge (μL) 10
Prothrombin Time
"The …test measures how long it takes for a clot to form in a
sample of blood." $$
Any lab test 30 days prior to the
Conventional Unit: Seconds **
admission up to the date of discharge
White Blood Count
This test measures the number of white blood cells (WBCs) 5 in Any lab test 30 days prior to the
Conventional unit: microliter
the blood.
admission up to the date of discharge (μL) 10
$$
4
5
**
10
References
Lab Tests Online® ©2001-2008 American Association for Clinical http://www.labtestsonline.org/site/inde
x.html
4 www.Medicineonline.com
5 Medline Encyclopedia (online)
http://www.webmd.com/digestive-disorders/alkalinephosphatase?page=2
Harrison's Principles of Internal Medicine, Thirteenth Edition