Potassium, Urine

Potassium, Urine is a topic covered in the Davis's Lab & Diagnostic Tests.

To view the entire topic, please or purchase a subscription.

Nursing Central is the award-winning, complete mobile solution for nurses and students. Look up information on diseases, tests, and procedures; then consult the database with 5,000+ drugs or refer to 65,000+ dictionary terms. Explore these free sample topics:

Nursing Central

-- The first section of this topic is shown below --

Synonym/Acronym:
Urine K+.

Rationale
To evaluate electrolyte balance, acid-base balance, and hypokalemia.

Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction. Usually, a 24-hr urine collection is ordered. As appropriate, provide the required urine collection container and specimen collection instructions.

Normal Findings
Method: Ion-selective electrode.

AgeConventional UnitsSI Units (Conventional Units × 1)
6–10 yr
 Male17–54 mEq/24 hr or mmol/24 hr17–54 mmol/24 hr
 Female8–37 mEq/24 hr or mmol/24 hr8–37 mmol/24 hr
10–14 yr18–58 mEq/24 hr or mmol/24 hr18–58 mmol/24 hr
Adult–older adult26–123 mEq/24 hr or mmol/24 hr26–123 mmol/24 hr
Note: Reference values depend on potassium intake and diurnal variation. Excretion is significantly higher at night.Potassium excretion declines in older adults due to the decline in aldosterone levels, decline in kidney function, and effects of commonly prescribed medications that inhibit the renin-angiotensin-aldosterone system.

Critical Findings and Potential Interventions
N/A

-- To view the remaining sections of this topic, please or purchase a subscription --