Laboratory Values - Correct and Preferred Usage

AMA Manual of Style - Stacy L. Christiansen, Cheryl Iverson 2020

Laboratory Values
Correct and Preferred Usage

Usually, in reports of clinical or laboratory data, the substance per se is not reported; rather, a value is given that was obtained by measuring a substance or some function or constituent of it. For example, one does not report hemoglobin but hemoglobin level. Some other correct forms are as follows:

agglutination titer

antinuclear antibody titer

creatinine level or clearance

differential white blood cell count

erythrocyte sedimentation rate

hemagglutination inhibition titer

high-density lipoprotein fraction

increase in antibody level

increase in bilirubin level

mean corpuscular volume

platelet count

prothrombin time

pulse rate

serum phosphorus concentration

total serum cholesterol value or level or concentration

24-hour urine output or volume

urinary placental growth factor concentration

urinary protein excretion

In reports of findings from clinical examinations or laboratory values, data may be enumerated without repeating value, level, etc, in accordance with the following example:

Laboratory values were as follows: white blood cell count, 19.5×103/μL; hemoglobin, 12.9 g/dL; hematocrit, 38.5; platelet count, 203; and international normalized ratio, 1.1.