Critical Lab Values Cheat Sheet

Critical Lab Values List: this cheats sheet will shows the values when the lab becomes “critical”…


This Cheat sheet identifies the normal adult values for the most common laboratory tests. It is important to remember that normal laboratory values may vary slightly, depending on the laboratory setting and equipment used in testing.

Critical lab values cheat sheet

If you are familiar with the normal values, you will be able to determine whether an abnormality exists when a laboratory value is presented in a question. The questions on the NCLEX-RN examination related to laboratory values will require you to identify whether the laboratory value is normal or abnormal, and then you are required to think critically about the effects of the laboratory value in terms of the client.

Pyramid Points focus on knowledge of the normal values for the most common laboratory tests, therapeutic serum medication levels of commonly prescribed medications, and determination of the need to implement specific actions based on the findings. When a question is presented on the NCLEX-RN examination regarding a specific laboratory value, note the disorder presented in the question and the associated body organ affected as a result of the disorder.

Laboratory values Common abbreviations:

Abbreviation                  Definition

g/dL                                   grams per deciliter

IU/L                                   International units per liter

mcg/dL                             micrograms per deciliter

mcg/mL                            micrograms per milliliter

mEq/L                               milliequivalents per liter

mg/dL                                milligrams per deciliter

microunits/mL              microunits per milliliter

mL/kg                                milliliters per kilogram

mm3                                   millimeters cubed

mm/hr                               millimeters per hour

ng/mL                                nanograms per milliliter

pg/mL                                picogram per milliliter

units/L                               units per liter

mL                                       microliters

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