PHOSPHORUS, BLOOD

Mnemonic

PHOS

Synonym

Inorganic Phosphorus (Pi) - Phosphate (PO4)

Specimen Collection Requirements

Collect

Serum or Plasma, one 5.0 mL gold (SST), 7.0 mL red or 3.0 mL mint green (lithium heparin, PST) top tube

Handling

Allow serum to clot completely at room temperature (minimum: 30 minutes). Preferably, separate serum or plasma from cells before transport.

Preferred Volume

0.5 mL

Minimum Volume

0.2 mL

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed specimens

Stability

AFTER SEPARATION FROM CELLS: Ambient (15-25°C): 8 hours; Refrigerated (2-8°C): 7 days; Frozen (at or below -20°C): 2 months

Testing Information

Performed

7 days/week

Method

Colorimetry

Referral Lab

Samaritan Health Services Laboratories

Reference Values

Reference Values

ADULTS: 2.7-4.5 mg/dL
Age adjusted ranges. Varies with age and sex.

CPT Codes

84100

Last Updated: Thursday, January 5, 2017 03:42:25 AM