PHOSPHORUS, BLOOD
Colorimetric
	Test Performed At:
		St. Louis Children’s Hospital
	Specimen Required:
		Collect 2.0 mL (minimum 0.6 mL) of whole blood in a green-top (lithium heparin) tube(s) or green SAMPLETTE™ or MICROTAINER®. A plain, red-top or serum gel tube(s) is also acceptable.
	Laboratory Notes:
		Spin and separate.
		NOTE:	If specimen is collected in a red-top tube(s), cancel and reorder a “Phos Ser”
	Reference Values:
		< 30 days:		4.2-9.0 mg/dL
		30 days-18 years:		3.0-6.0 mg/dL
		>18 years: (plasma)		2.3-4.3 mg/dL
		>18 years: (serum)		2.5-4.5 mg/dL
		Critical values (automatic callback):
		Newborns: (<30 days)		<1.0 and >11.0 mg/dL
		Others: (>30 days)		<1.0 and >8.0 mg/dL
		Critical test results will be called initially and every 24 hours thereafter.
	Day(s) Test Set Up:
		Monday - Sunday
	Cut-Off Time:
	Turn Around Time:
		Same day
	CPT Code:
		84100
	Care Manager Order Name:
		Phosphorus, Plasma ONCE RTN
	KIDDOS Order Name:
		Phosphorus Plasma Phosphorus Serum
	Cerner Order Name:
		Phos Plas
		Phos Ser

Last Updated 06/09