Sign in →

Test Code Crt Guan Creatine, Guanidinoacetate, Plasma

Clinical System Name

Creatine, Creatinine, Guanidinoacetate, Plasma

Synonyms

AGAT (Arginine glycine amidinotransferase)
CRT GUAN
CRTR (Creatine transporter)
GAMT (Guanidinoacetate methyltransferase)
Guanidinoacetate

Sample Requirements

Specimen: Whole Blood

Container(s): Dark Green/Sodium Heparin

Preferred Vol: 4.0 mL

Minimum Vol: 2.0 mL

 

Note: 

Processing Instructions

Reject due to:

Spin: Y

Aliquot: Y

Temp: -20 C

Storage Location: Separate plasma as soon as possible. Aliquot 1.0 mL plasma in the CPA freezer, Send Outs rack. Serum is acceptable, not preferred.

 

Off-site collection: Separate plasma as soon as possible. Serum is acceptable, not preferred.

Stability

Specimen Type Temperature Time
Plasma Room temp

N

  Refrigerated N
  Frozen

7 d

 

Availability

STAT Performed TAT
N Drawn daily 10 - 14 d

 

Performing Laboratory

Baylor College of Medicine

Baylor Genetics Laboratories

2450 Holcombe - Grand Blvd Dock

Houston, TX 77021-2024

 

Phone: (800) 411-4363

 

Department

Department: Send Outs

Phone Number: (206) 987-2563

Reference Range

  Creatine (umoles/L)

Guanidinoacetate (umoles/L)

0 - 2 year 28 - 102 0.3 - 1.6
3 - Adult 20 - 110 0.3 - 2.1

 

 

Methodology

Method: Tandem Mass Spectroscopy

Analytical Volume: 1.0 mL plasma

Limitations:

Send Out Instructions

Reference Test Name: Creatine and Guanidinoacetate Determination - Plasma
Reference Test Number:

4130

Instructions:

Ship frozen samples overnight via Fed Ex. Baylor does not accept Saturday.