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Test Code PHOS Phosphorus (Inorganic), Serum

Reporting Name

Phosphorus (Inorganic), S

Useful For

Diagnosis and management of a variety of disorders including bone, parathyroid, and kidney disease

Specimen Type

Serum


Necessary Information


Patient's age and sex are required.



Specimen Required


Patient Preparation: Patient should fast overnight (12-14 hours)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions:

1. Serum gel tubes should be centrifuged within 2 hours of collection.

2. Red-top tubes should be centrifuged, and the serum aliquoted into a plastic vial within 2 hours of collection.


Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen (preferred) 365 days
  Refrigerated  7 days

Reference Values

Males

1-4 years: 4.3-5.4 mg/dL

5-13 years: 3.7-5.4 mg/dL

14-15 years: 3.5-5.3 mg/dL

16-17 years: 3.1-4.7 mg/dL

≥18 years: 2.5-4.5 mg/dL

Reference values have not been established for patients that are less than 12 months of age.

Females

1-7 years: 4.3-5.4 mg/dL

8-13 years: 4.0-5.2 mg/dL

14-15 years: 3.5-4.9 mg/dL

16-17 years: 3.1-4.7 mg/dL

≥18 years: 2.5-4.5 mg/dL

Reference values have not been established for patients that are less than 12 months of age.

Day(s) Performed

Monday through Sunday

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

84100

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PHOS Phosphorus (Inorganic), S 2777-1

 

Result ID Test Result Name Result LOINC Value
PHOS Phosphorus (Inorganic), S 2777-1

Report Available

Same day/1 to 3 days

Reject Due To

Gross hemolysis Reject

Method Name

Photometric, Ammonium Molybdate

Forms

If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.