Phosphorus

Alphabetical Test listing

Phosphorus-205

  
Phosphorus
  
205
  
84100.0
  
PO4
  
Lithium heparin (Li hep) plasma
  
  
1.0 mL
  
0.2 mL
  

Spin

  

Lt green plasma separator (PST)

  
Serum
  
  

Spin

  

Gold serum separator (SST) tube

  

Refrigerated (preferred) - 4 days

Ambient - 1 day

Frozen - 12 months

  
  • Improper labels (unlabeled or mislabeled)
  • Hemolysis
  • Improper anticoagulant or ratio
  • Delay in transport
  • Improper storage temperature affecting results
  • Improper container
  • Leaking container resulting in compromised specimen
  • Quantity not sufficient (QNS)
  
AHL - Chemistry: C
  
Daily
  
1 day
  

Spectrophotometric

  
 Age  Range (mg/dL)
 10 days  4.5 - 9.0
 1 year  4.5 - 6.5
 12 years  3.4 - 5.9
 Adult  2.3 - 4.7
  

Low:  < 1.0 mg/dL

High: >10.0 mg/dL

  

The human body contains nearly a kilogram of phosphorus. Nearly 80% of this amount is in the form of calcium phosphate salts which are contained in, and give rigidity to, bone. The rest is distributed through all other cells of the body where its role is important and complex. Much of the metabolism of carbohydrates involves esterification of intermediary metabolites with phosphate. In fact, the metabolism of all food terminates in the formation of adenosine triphosphate (ATP). The breakdown of ATP to ADP produces the energy needed for chemical reactions involved in cell function, maintenance, and growth. Phosphate is also an integral part of the structure of the nucleic acids, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) which transfer genetic information.

Abnormal serum phosphate levels are most commonly seen in kidney, bone, and parathyroid diseases. Calcium and phosphorus in serum usually exhibit a reciprocal relationship. Increased serum phosphorus may occur in hypervitaminosis D, hypoparathyroidism, and renal failure. Reduced serum phosphorus levels are seen in rickets (Vitamin D deficiency), hyperparathyroidism, and Fanconi’s syndrome.

  
84100
  
11/30/2001
  
02/12/2020
  
02/10/2020