CREATININE, SERUM

Mnemonic

CREAT

Synonym

Serum Creatinine

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). Centrifuge and separate serum or plasma from cells within 1 hour of collection.

Preferred Volume

0.5 mL

Minimum Volume

0.2 mL

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed specimens, tubes containing sodium citrate

Stability

AFTER SEPARATION FROM CELLS: Ambient (15-25°C): 24 hours; Refrigerated (2-8°C): 7 days; Frozen (at or below -20°C): 6 months

Testing Information

Performed

7 days/week

Method

Colorimetry

Referral Lab

Samaritan Health Services Laboratories

Reference Values

Reference Values

MALE: 0.7-1.2 mg/dL
FEMALE: 0.5-1.0 mg/dL

Critical Values

> 7.3 mg/dL

CPT Codes

82565

Last Updated: Thursday, January 5, 2017 03:42:05 AM