Test
Name

Phosphorus

Test
Code

203

Unit

mg/dL

Station

Chemistry

Synonym
Name/Abbreviation

Inorganic
Phosphate, Blood; P; Phos; PO4

CPT
Code

84100

Performing
Facility

American
Medical Labs, Herzliya Pituah

Analyzer

Roche cobas 6000

Test
Method

Spectrophotometry

AML
Preferred Tube

5
mL SST gel

Storage
Instructions

Refrigerated.

Separate
serum from cells within 45 minutes

Stability:

Up to 24 hours at 15 to 25^oC

 up to 4 days at 2 to 8^oC

up to 1 year at -15 to -25^oC.

Min.
Volume

1
mL

Turn-Around-Time

One day

Intended
Use

To evaluate disorders known to cause abnormal phosphorus levels: increased
levels can be found in renal failure, vit. D intoxication, hypoparathyroidism, bone metastases, liver disease. Decreased levels in reckets, vit. D deficiency, sepsis, hyperparathyroidism and Fanconi’s syndrome.

Limitations

Measuring
range: 0.3 to 20 mg/dL

Patient
Preparation

No patient preparation needed

Reasons
for Rejection

Hemolysis;
gross lipemia

Adult
Reference Ranges

 2.7 to 4.5
mg/dL