Test Code PHOS Phosphorus (Inorganic), Serum or Plasma

Methodology

Phosphomolybdate

Specimen Requirements

Container/Tube:

Preferred: Lithium heparin (light green-top)

Acceptable: Serum Gel

Draw blood, spin down and send 1 mL (pediatric: 0.2 mL) of plasma or serum.

Specimen Stability Information

Specimen Type	Temperature	Time
Plasma,lithium heparin / Serum	RT, spun	1 day
	Refrigerated	4 days

Reference Values

Age	Male (mg/dL)	Age	Female (mg/dL)
0 – 30 days	3.9 – 6.9	0 – 30 days	4.3 – 7.7
1 – 11 m	3.5 – 6.6	1 – 11 m	3.7 – 6.5
1 – 3 years	3.1 – 6.0	1 – 3 years	3.4 – 6.0
4 – 9 years	3.3 – 5.6	4 – 9 years	3.2 – 5.5
10 – 12 years	3.2 – 5.7	10 – 12 years	3.3 – 5.3
13 – 15 years	2.9 – 5.1	13 – 15 years	2.8 – 4.8
16 – 18 years	2.7 – 4.9	16 – 18 years	2.5 – 4.8
> 18 years	2.7 – 4.5	> 18 years	2.7 – 4.5

Critical value: <1.3 mg/dL

Reject Due To

Hemolysis	Mild:	ok	Gross:	Reject
Lipemia	Mild:	ok	Gross:	ok
Icterus	Mild:	ok	Gross:	ok

Day(s) Test Set Up

Monday through Sunday

CPT Coding

84100

Secondary ID

HHA218

Performing Laboratory

Huntsville Hospital Laboratory/ Madison Hospital Laboratory

LOINC Coding

Test Name	LOINC Code
Phosphorus (Inorganic), Serum or Plasma	2777-1