A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Phosphorus

Test Code
PHOS


CPT Codes
84100

Preferred Specimen
1.0 mL serum


Transport Container
Gold top tube/Serum Separator Tube.


Transport Temperature
Room temperature


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis.


Methodology
Molybdate UV

Reference Range
2.7-4.5 mg/dL


Clinical Significance
Serum phosphate levels alone are of limited diagnostic value and should be correlated with werum calcium levels.  An increase in the level of phosphorus causes a decrease in the calcium level.  The mechanism is influenced by interactions between parathormone and vitamin D.  Hypoparathyroidism, vitamin D intoxication and renal failure with decresed glomerular phosphate filtration give rise to hyperphosohatemia.  Hypophosphatemia occur in rickets, hyperparathyroidism and Fanconi's syndrome.




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.