| 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, Plasma or Serum
Test CodePHOS - NOCO
CPT Codes
84100
Preferred Specimen
1.0 ml plasma from Green top (Lithium Heparin)
Minimum Volume
0.5 mL
Note: For neonate requirements see Neonate Minimum Blood Volumes
Note: For neonate requirements see Neonate Minimum Blood Volumes
Other Acceptable Specimens
1.0 mL serum from Serum Gel or Red Top
Specimen Stability
| Temperature | Time |
| Refrigerated | 4 days |
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis
Methodology
Spectrophotometric Bichromatic Endpoint
Setup Schedule
Monday through Sunday; Continuously
Report Available
Same day
Reference Range
MALES
0 - 2 years: 3.2 - 7.3 mg/dL
2 - 5 years: 3.6 - 6.5 mg/dL
5 - 8 years: 3.6 - 6.1 mg/dL
8 - 11 years: 3.6 - 6.0 mg/dL
11 - 14 years: 3.5 - 5.9 mg/dL
14 -17 years: 3.2 - 5.8 mg/dL
17 - 19 years: 2.7 - 5.9 mg/dL
19 - 150 years: 2.4 - 4.8 mg/dL
FEMALES
0 - 2 years: 3.2 - 7.3 mg/dL
2 - 5 years: 3.6 - 6.5 mg/dL
5 - 8 years: 3.6 - 6.1 mg/dL
8 - 11 years: 3.6 - 6.0 mg/dL
11 - 14 years: 3.5 - 5.9 mg/dL
14 -17 years: 3.2 - 5.3 mg/dL
17 - 19 years: 2.8 - 5.0 mg/dL
19 - 150 years: 2.4 - 4.8 mg/dL
Critical value (automatic call-back): <1.1 mg/dL
0 - 2 years: 3.2 - 7.3 mg/dL
2 - 5 years: 3.6 - 6.5 mg/dL
5 - 8 years: 3.6 - 6.1 mg/dL
8 - 11 years: 3.6 - 6.0 mg/dL
11 - 14 years: 3.5 - 5.9 mg/dL
14 -17 years: 3.2 - 5.8 mg/dL
17 - 19 years: 2.7 - 5.9 mg/dL
19 - 150 years: 2.4 - 4.8 mg/dL
FEMALES
0 - 2 years: 3.2 - 7.3 mg/dL
2 - 5 years: 3.6 - 6.5 mg/dL
5 - 8 years: 3.6 - 6.1 mg/dL
8 - 11 years: 3.6 - 6.0 mg/dL
11 - 14 years: 3.5 - 5.9 mg/dL
14 -17 years: 3.2 - 5.3 mg/dL
17 - 19 years: 2.8 - 5.0 mg/dL
19 - 150 years: 2.4 - 4.8 mg/dL
Critical value (automatic call-back): <1.1 mg/dL
Clinical Significance
88 % of the phosphorus contained in the body is localized in bone in the form of calcium phosphate as the apatite Ca2+[Ca3(PO4)2]3 2-. The remainder is involved in intermediary carbohydrate metabolism and in physiologically important substances such as phospholipids, nucleic acids and ATP. Phosphorus occurs in blood in the form of inorganic phosphate and in organically bound phosphoric acid. The small amount of extracellular organic phosphorus is found almost exclusively in the form of phospholipids. The ratio of phosphate to calcium in the blood is approximately 6:10. 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 decreased glomerular phosphate filtration give rise to hyperphosphatemia. Hypophosphatemia occurs in rickets, hyperparathyroidism and Fanconi's syndrome.
Performing Laboratory
Banner Fort Collins Medical Center Laboratory
McKee Medical Center Laboratory
North Colorado Medical Center Laboratory
Summit View Laboratory
