PHOSPHORUS, URINE, RANDOM

Message

There is a diurnal variation in urine phosphate excretion with the highest output occurring in the afternoon.

Test Code

PHOUR

CPT Codes
84105

Includes

Phosphorus

Preferred Specimen

Sterile Container

Minimum Volume

5 mL

Instructions

Refrigerate specimen. Sample will be acidified by Central Lab staff with 6N HCL to a pH <2 prior to testing.

Transport Temperature

Refrigerate

Specimen Stability

2-8°C up to 1 day

Methodology

Phosphomalybdate, UV

Setup Schedule

M, T, W, Th, F, Sa, Sun

Report Available

Same day tested by performing laboratory.

Reference Range

Reference ranges have not been established for random samples.

Clinical Significance

Measurements of inorganic phosphorus are used in the diagnosis and treatment of various disorders including parathyroid gland and kidney diseases, and Vitamin D imbalance.

Performed By
Alverno Laboratories

Performing Laboratory
Alverno Central Lab
NCHB1 (Chemistry, Beckman AU)

Last Updated: July 5, 2023

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.