POTASSIUM, URINE, 24 HOUR

Test Code

UK (OE), UK24 (LAB)

CPT Codes
84133

Preferred Specimen

24 Hour Urine Container without preservative

Patient Preparation
Discard first morning usine on day of collection and note the time. Collect all urine voided during the next 24 hours. Refrigerate the urine during entire collection. Avoid alcoholic beverages during the collection period. See 24 hour urine collection instructions below.

Minimum Volume

5 mL aliquot (20 mL aliquot)

Instructions

Mix the specimen well and measure the 24-Hour volume (RECORD THE TOTAL VOLUME)
Pour off 20 mL of urine into a separate plastic screw-cap container
Refrigerate if not tested immediately

Transport Container

Transfer tube (record the total volume)

Transport Temperature

Refrigerate

Specimen Stability

2-8°C up to 3 days

Methodology
Ion Selective Electrode (ISE)

Setup Schedule

M, T, W, Th, F, Sa, Su

As received; STAT testing is available

Clinical Significance

Urinary excretion of potassium is increased in primary aldosteronism. It is often increased in dehydration and in salicylate toxicity. Decreased levels are seen in malabsorption

Performing Laboratory
Alverno Central Lab

Additional Information
24 Hour Urine Collection Instructions

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.