Creatinine

Alphabetical Test listing

Creatinine-82

Test name:

Creatinine

Test number:

Excellian order number:

82565.2

Abbreviation:

CRE

Tests included:

Creatinine
eGFR

Specimen type:

Li heparin plasma

Collection container:

Lt green plasma separator (PST)

Volume:

1.0 mL

Minimum volume:

0.5 mL

Collection instructions:

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10, times to prevent clotting

Processing instructions:

Spin within two (2) hours of sample collection

Transport container:

Lt green plasma separator (PST)

Alternate specimen type:

Serum
Sodium heparin (Na hep) plasma

Alternate collection container:

Gold serum separator (SST) tube

Alternate collection instructions:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

Alternate processing instructions:

Gold

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection

Alternate transport container:

Gold serum separator (SST) tube

Transport and stability:

Refrigerated (preferred) - 7 days

Ambient - 7 days

Frozen - 3 months

Reason for rejection:

Improper labels (unlabeled or mislabeled)
Hemolysis (some procedures)
Improper anticoagulant or ratio
Delay in transport
Improper storage temperature affecting results
Improper container
Leaking container resulting in compromised specimen
Quantity not sufficient (QNS)

Performing lab:

AHL - Chemistry: C

Days set up:

Daily

TAT:

1 day

Method:

Kinetic - Jaffe (Alkaline Picrate)

Reference ranges:

Adult Female	0.50 - 0.90 mg/dl
Adult Male	0.70 - 1.20 mg/dl
neonate (premature)	0.29 - 1.04 mg/dl
0 up to 24 hours	0.24 - 0.85 mg/dl
24 hours up to 12 months	0.17 - 0.42 mg/dl
1year up to 3 years	0.24 - 0.41 mg/dl
3 years up to 5 years	0.31 - 0.47 mg/dl
5 years up to 7 years	0.32 - 0.59 mg/dl
7 years up to 9 years	0.40 - 0.60 mg/dl
9 years up to 11 years	0.39 - 0.73 mg/dl
11 years up to 13 years	0.53 - 0.79 mg/dl
13 years up to 15 years	0.57 - 0.87 mg/dl

Results that require action (critical):

Female	15 years up to 999 years	> 7.0 mg/dl ambulatory only
Male	15 years up to 999 years	> 7.0 mg/dl ambulatory only
	0 up to 24 hours	> 1.5 mg/dl
	24 hours up to 12 months	> 1.5 mg/dl
	1 year up to 3 years	> 1.5 mg/dl
	3 years up to 5 years	> 1.5 mg/dl
	5 years up to 7 years	> 1.5 mg/dl
	7 years up to 9 years	> 2.0 mg/dl
	9 years up to 11 years	> 2.0 mg/dl
	11 years up to 13 years	> 3.0 mg/dl
	13 years up to 15 years	> 3.0 mg/dl

Clinical information:

Order this test when Glomerular Filtration Rate (GFR) is ordered - every serum creatinine results will have a GFR calculated at no additional charge.

CPT codes:

82565

Date created:

11/30/2001

Revised date:

12/22/2022

Review date:

01/04/2024