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Test Code LAB113 Phosphorus, Plasma

Performing Laboratory

Barnes-Jewish Hospital Laboratory

Methodology

Colorimetric (Phosphomolybdate, End point)

Literature Reference:

Package insert: Phosphorus inorganic PHOS2. Roche Corporation, 04/2022.

Specimen Requirements

Note: This test is also available as part of LAB19 Renal Function Panel. 

 

Specimen Type: Plasma
Container/Tube: Mint-green top (lithium heparin)
Specimen Volume: Full tube

 

Day(s) Test Set Up

Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: 2 to 4 hours after receipt in laboratory

Test Classification and CPT Coding

84100

Reference Values

< 30 days: 4.0 - 9.0 mg/dL

1 month -1 year: 3.5 - 7.0 mg/dL

> 1 year - 12 years: 3.0 - 6.0 mg/dL

> 12 years - 15 years: 2.8 - 5.5 mg/dL

> 15 years - 18 years: 2.5 - 5.0 mg/dL

> 18 years: 2.3 - 4.5 mg/dL

 

Literature Reference:

Rifai N, Horvath AR, Wittwer AT eds: Textbook of Clinical Chemistry and Molecular Diagnostics 6th ed: Chapter 64, p. 1422, Elsevier, St. Louis, MO 2018.

Specimen Transport Temperature

Ambient

Additional Information

For BJH Laboratory Use Only

Alternate Tube:
1 dark green-top (lithium heparin) tube
1 red-top tube

 

Laboratory Processing Instructions:

Test performed in BJH Core Lab.  Processed by automated line for delivery to the Cobas 8000. Completed specimens are stored refrigerated for 5 days. 

Test performed in South County Siteman and Ambulatory Cancer Building Lab.  Centrifuge sample and deliver to the Cobas.  Completed specimens are stored refrigerated for 5 days. 

Special Instructions

See Analyte Stability Chart under General Information for a complete list.

LOINC Code Information

Name LOINC Code
Phosphate 2777-1