Eurofins Biomnis code

TRP

Synonyms

• TRP
• Tubular reabsorption rate of phosphorus

Specialty

Biochemistry

Clinical significance

Measuring the rate of the Tubular Reabsorption of Phosphorus (TRP) is useful if a renal component is suspected in a case of abnormal calcium phosphate metabolism. TRP is reduced in renal insufficiency, tubular acidosis, Fanconi's syndrome, vitamin D-resistant rickets, hyperparathyroidism and hypercalcaemia.

Preanalytics

• 1 mL Serum + 5 mL of a 2hr acidified urine collection(pH<3)
•   Reftrigerated

• A tube specifically for this analysis : No

Further information

The calculation of TRP require creatinine and phosphorus assays on serum and urines.
The subject, fasting since the previous evening, empties his/her bladder at 8 a.m. and consumes 250 mL of water. Collect the urine eliminated from 8 to 10 a.m.

Methodology

Chemistry - Spectrophotometry

Turnaround time

1 day