Lab Information Manual

Laboratory:

Clinical Biochemistry (POC (Point of Care) TEST)

Test Name:

Creatinine - epoc - (B)

Test Code: CRB

Clinical Information:

Description: Creatinine is a normal metabolic by-product of muscle metabolism. It is primarily cleared by the kidneys. Measurement of creatinine in the blood therefore provides an indirect assessment of kidney function.

Creatinine measurements, along with age, sex, and height (pediatrics only) are used in estimated Glomerular Filtration Rate (eGFR) calculations.

An eGFR may be requested from the epoc test menu. The CKD-EPI (2009) equation is used for adults, while the Bedside-Schwartz equation is used for pediatric patients.

Collection Devices:

Preferred Device:	1 - Li Heparin, NO GEL 4.0 mL Tube(s) - Full Tube Collection Li Heparin, NO GEL 4.0 mL Tube(s) - Full Tube Collection Manufacturer: BD (Becton Dickinson) Catalogue #: 367884
Alternate Device:	1 - Balanced Heparin Blood Gas Syringe (AT LEAST HALF FULL) No Image Available Balanced Heparin Blood Gas Syringe (AT LEAST HALF FULL) Manufacturer: Catalogue #:

Capillary specimens must be collected in a balanced heparin capillary tube (FULL collection), capped, mixed, and tested within 5 minutes of collection.

Specimen Required:

Whole Blood: 4.0 mL

Pediatric Whole Blood: 0.1 mL

Collection Information: Evacuated blood tubes must be FULL to maintain specimen stability. Specimens must remain capped until tested to avoid contamination with air.

Rejection criteria: clots, insufficient volume, leaking specimens, and specimens not received within 10 minutes of collection.

Capillary samples must be tested at the bedside, within 5 minutes.

Specimen Stability:

Ambient: 30 minutes (syringe); 10 minutes (vacutainer), 5 minutes (capillary)

Refrigerated: DO NOT REFRIGERATE

Frozen: DO NOT FREEZE

Do not submit specimens on ice.

Referral:

Only available at sites which perform epoc testing on-site.

Requisition:

_SH Hospital Biochemistry Hematology Non Winnipeg Brandon (R250-10-91)

Reference Values:

AGE	GENDER	RANGE (µmol/L)
0 - 14 d	ALL	35 - 85
15 d - 1 y	ALL	15 - 38
2 - 4 y	ALL	24 - 43
5 - 11 y	ALL	33 - 59
12 - 14 y	ALL	45 - 77
15 - 18 y	FEMALE	48 - 79
15 - 18 y	MALE	60 - 100
≥ 19 y	FEMALE	45 - 84
≥ 19 y	MALE	59 - 104

Method of Analysis: Amperometric determination coupled to enzymatic sarcosine oxidase method

Siemens epoc® Blood Analysis System, BGEM test card

Availability:

Daily or Stat