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HelpTest Code CRDPP Creatine Disorders Panel, Plasma
Ordering Guidance
For additional diagnostic testing, consider ordering CRDPU / Creatine Disorders Panel, Random, Urine.
Additional Testing Requirements
To diagnose all creatine deficiency syndromes, order CRDPU / Creatine Disorders Panel, Random, Urine in addition to this test.
Necessary Information
Patient's age and sex are required.
Specimen Required
Collection Container/Tube:
Preferred: Lavender top (EDTA)
Acceptable: Green top (sodium heparin), yellow top (ACD)
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot plasma into plastic vial. Send plasma frozen.
Useful For
Evaluating patients with a clinical suspicion of arginine:glycine amidinotransferase deficiency, guanidinoacetate methyltransferase deficiency, and creatine transporter deficiency using plasma specimens
Testing Algorithm
For more information see:
-Newborn Screen Follow-up for Guanidinoacetate Methyltransferase Deficiency
-Epilepsy: Unexplained Refractory and/or Familial Testing Algorithm
If the patient has abnormal newborn screening results for guanidinoacetate methyltransferase deficiency, refer to the appropriate ACMG Newborn Screening ACT Sheet.(1)
Special Instructions
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Reporting Name
Creatine Disorders Panel, PSpecimen Type
PlasmaSpecimen Minimum Volume
0.1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma | Frozen (preferred) | 14 days | |
| Refrigerated | 7 days | ||
| Ambient | 72 hours |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
|
Creatine Disorders Panel Reference Values |
||||||||||||
|
|
≤11 Months |
12-23 Months |
24-35 Months |
|||||||||
|
Female |
Male |
Female |
Male |
Female |
Male |
|||||||
|
Creatine |
38.6-96.8 |
39.0-97.0 |
38.2-96.5 |
38.6-96.5 |
37.7-96.0 |
38.2-96.0 |
||||||
|
Creatinine |
27.6-35.9 |
27.6-35.2 |
27.6-36.5 |
27.6-35.5 |
27.6-37.1 |
27.6-36.0 |
||||||
|
Guanidinoacetate |
0.7-2.0 |
0.7-2.1 |
0.7-2.0 |
0.7-2.1 |
0.7-2.0 |
0.7-2.1 |
||||||
|
Creatine/ |
≤3.07 |
≤3.60 |
≤3.02 |
≤3.54 |
≤2.96 |
≤3.48 |
||||||
|
Guanidinoacetate/ |
≤0.040 |
≤0.040 |
≤0.042 |
≤0.040 |
≤0.043 |
≤0.042 |
||||||
|
Guanidinoacetate/ |
≤0.051 |
≤0.081 |
≤0.051 |
≤0.080 |
≤0.051 |
≤0.079 |
||||||
|
|
||||||||||||
|
|
3 Years |
4 Years |
5 Years |
|||||||||
|
Female |
Male |
Female |
Male |
Female |
Male |
|||||||
|
Creatine |
37.1-95.5 |
37.7-95.3 |
36.0-94.4 |
36.8-94.1 |
34.6-93.2 |
35.6-92.7 |
||||||
|
Creatinine |
27.6-37.9 |
27.7-36.9 |
27.6-39.3 |
27.7-38.2 |
27.6-40.9 |
27.8-39.9 |
||||||
|
Guanidinoacetate |
0.7-2.1 |
0.7-2.2 |
0.7-2.1 |
0.7-2.2 |
0.7-2.1 |
0.7-2.2 |
||||||
|
Creatine/ |
≤2.89 |
≤3.40 |
≤2.77 |
≤3.26 |
≤2.64 |
≤3.09 |
||||||
|
Guanidinoacetate/ |
≤0.045 |
≤0.043 |
≤0.049 |
≤0.045 |
≤0.053 |
≤0.049 |
||||||
|
Guanidinoacetate/ |
≤0.050 |
≤0.077 |
≤0.050 |
≤0.075 |
≤0.049 |
≤0.072 |
||||||
|
|
6 Years |
7 Years |
8 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
33.0-91.7 |
34.3-91.0 |
31.2-90.0 |
32.7-89.2 |
29.2-88.1 |
31.0-87.3 |
|
Creatinine |
27.6-42.8 |
28.0-41.9 |
27.7-44.9 |
28.3-44.3 |
27.8-47.0 |
28.8-47.1 |
|
Guanidinoacetate |
0.7-2.1 |
0.7-2.3 |
0.7-2.1 |
0.8-2.3 |
0.8-2.1 |
0.8-2.4 |
|
Creatine/ |
≤2.49 |
≤2.91 |
≤2.33 |
≤2.70 |
≤2.17 |
≤2.49 |
|
Guanidinoacetate/ |
≤0.058 |
≤0.053 |
≤0.063 |
≤0.058 |
≤0.069 |
≤0.064 |
|
Guanidinoacetate/ |
≤0.049 |
≤0.069 |
≤0.048 |
≤0.066 |
≤0.047 |
≤0.063 |
|
|
9 Years |
10 Years |
11 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
27.2-85.9 |
29.3-85.2 |
25.2-83.7 |
27.4-83.1 |
23.4-81.3 |
25.7-80.9 |
|
Creatinine |
28.0-49.3 |
29.5-50.1 |
28.2-51.5 |
30.6-53.6 |
28.4-53.6 |
32.0-57.2 |
|
Guanidinoacetate |
0.8-2.2 |
0.8-2.5 |
0.9-2.2 |
0.9-2.6 |
0.9-2.2 |
1.0-2.6 |
|
Creatine/ |
≤2.02 |
≤2.28 |
≤1.86 |
≤2.07 |
≤1.72 |
≤1.87 |
|
Guanidinoacetate/ |
≤0.075 |
≤0.070 |
≤0.081 |
≤0.078 |
≤0.087 |
≤0.085 |
|
Guanidinoacetate/ |
≤0.047 |
≤0.060 |
≤0.046 |
≤0.057 |
≤0.045 |
≤0.055 |
|
|
12 Years |
13 Years |
14 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
21.7-78.7 |
23.9-78.6 |
20.3-76.2 |
22.3-76.2 |
19.0-73.6 |
20.8-73.8 |
|
Creatinine |
28.7-55.7 |
33.8-61.0 |
29.1-57.7 |
35.9-64.8 |
29.5-59.5 |
38.1-68.5 |
|
Guanidinoacetate |
0.9-2.2 |
1.0-2.7 |
1.0-2.3 |
1.1-2.8 |
1.0-2.3 |
1.1-2.9 |
|
Creatine/ |
≤1.58 |
≤1.68 |
≤1.45 |
≤1.50 |
≤1.33 |
≤1.34 |
|
Guanidinoacetate/ |
≤0.092 |
≤0.093 |
≤0.097 |
≤0.101 |
≤0.101 |
≤0.109 |
|
Guanidinoacetate/ |
≤0.044 |
≤0.053 |
≤0.043 |
≤0.051 |
≤0.042 |
≤0.050 |
|
|
15 Years |
16 Years |
17 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
18.1-71.1 |
19.5-71.2 |
17.4-68.7 |
18.4-68.6 |
16.9-66.5 |
17.4-65.9 |
|
Creatinine |
29.9-61.3 |
40.4-71.9 |
30.4-62.9 |
42.4-75.0 |
30.9-64.4 |
44.2-77.6 |
|
Guanidinoacetate |
1.0-2.3 |
1.2-2.9 |
1.1-2.3 |
1.3-3.0 |
1.1-2.3 |
1.3-3.1 |
|
Creatine/ |
≤1.22 |
≤1.20 |
≤1.12 |
≤1.07 |
≤1.04 |
≤0.97 |
|
Guanidinoacetate/ |
≤0.104 |
≤0.117 |
≤0.107 |
≤0.125 |
≤0.109 |
≤0.132 |
|
Guanidinoacetate/ |
≤0.041 |
≤0.049 |
≤0.040 |
≤0.048 |
≤0.040 |
≤0.048 |
|
|
18 Years |
19 Years |
20 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
16.7-64.4 |
16.6-63.3 |
16.6-62.7 |
15.8-60.7 |
16.5-61.1 |
15.2-58.3 |
|
Creatinine |
31.3-65.8 |
45.6-80.0 |
31.8-67.0 |
46.7-82.0 |
32.2-68.2 |
47.4-83.9 |
|
Guanidinoacetate |
1.1-2.4 |
1.4-3.1 |
1.1-2.4 |
1.4-3.2 |
1.1-2.4 |
1.5-3.2 |
|
Creatine/ |
≤0.98 |
≤0.87 |
≤0.93 |
≤0.80 |
≤0.89 |
≤0.73 |
|
Guanidinoacetate/ |
≤0.111 |
≤0.139 |
≤0.112 |
≤0.145 |
≤0.113 |
≤0.150 |
|
Guanidinoacetate/ |
≤0.039 |
≤0.047 |
≤0.038 |
≤0.047 |
≤0.038 |
≤0.046 |
|
|
21 Years |
22 Years |
23 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
16.6-59.8 |
14.7-56.0 |
16.6-58.8 |
14.2-54.0 |
16.7-57.9 |
13.7-52.2 |
|
Creatinine |
32.5-69.2 |
47.9-85.6 |
 32.8-70.2 |
48.2-87.2 |
 33.1-71.1 |
48.4-88.8 |
|
Guanidinoacetate |
1.1-2.4 |
1.5-3.2 |
1.1-2.5 |
1.5-3.3 |
1.1-2.5 |
1.6-3.3 |
|
Creatine/ |
≤0.87 |
≤0.68 |
≤0.85 |
≤0.64 |
≤0.84 |
≤0.61 |
|
Guanidinoacetate/ |
≤0.114 |
≤0.156 |
≤0.115 |
≤0.161 |
≤0.116 |
≤0.165 |
|
Guanidinoacetate/ |
≤0.037 |
≤0.045 |
≤0.037 |
≤0.045 |
≤0.037 |
≤0.044 |
|
|
24 Years |
25 Years |
26 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
16.7-57.2 |
13.3-50.6 |
16.7-56.5 |
12.9-49.3 |
16.7-56.0 |
12.5-48.1 |
|
Creatinine |
33.3-71.9 |
48.6-90.2 |
33.6-72.8 |
48.7-91.5 |
33.7-73.6 |
48.9-92.7 |
|
Guanidinoacetate |
1.1-2.5 |
1.6-3.3 |
1.1-2.5 |
1.6-3.3 |
1.1-2.6 |
1.6-3.4 |
|
Creatine/ |
≤0.84 |
≤0.58 |
≤0.84 |
≤0.56 |
≤0.84 |
≤0.54 |
|
Guanidinoacetate/ |
≤0.116 |
≤0.170 |
≤0.117 |
≤0.174 |
≤0.118 |
≤0.179 |
|
Guanidinoacetate/ |
≤0.036 |
≤0.043 |
≤0.036 |
≤0.043 |
≤0.036 |
≤0.042 |
|
|
27 Years |
28 Years |
29 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
16.7-55.5 |
12.1-47.1 |
16.6-55.1 |
11.8-46.3 |
16.5-54.7 |
11.5-45.4 |
|
Creatinine |
33.9-74.4 |
49.0-93.7 |
34.1-75.2 |
49.1-94.5 |
34.2-76.0 |
49.2-95.3 |
|
Guanidinoacetate |
1.1-2.6 |
1.6-3.4 |
1.1-2.6 |
1.6-3.4 |
1.1-2.6 |
1.6-3.4 |
|
Creatine/ |
≤0.84 |
≤0.52 |
≤0.84 |
≤0.51 |
≤0.84 |
≤0.49 |
|
Guanidinoacetate/ |
≤0.118 |
≤0.182 |
≤0.119 |
≤0.186 |
≤0.119 |
≤0.188 |
|
Guanidinoacetate/ |
≤0.036 |
≤0.042 |
≤0.036 |
≤0.041 |
≤0.036 |
≤0.041 |
|
|
30 Years |
31 Years |
32 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
16.4-54.2 |
11.3-44.7 |
16.4-53.8 |
11.1-43.9 |
16.3-53.4 |
11.0-43.2 |
|
Creatinine |
34.4-76.8 |
49.3-96.0 |
34.6-77.5 |
49.3-96.7 |
34.7-78.2 |
49.4-97.4 |
|
Guanidinoacetate |
1.2-2.7 |
1.6-3.5 |
1.2-2.7 |
1.6-3.5 |
1.2-2.7 |
1.6-3.5 |
|
Creatine/ |
≤0.84 |
≤0.48 |
≤0.83 |
≤0.47 |
≤0.83 |
≤0.46 |
|
Guanidinoacetate/ |
≤0.120 |
≤0.190 |
≤0.120 |
≤0.192 |
≤0.119 |
≤0.192 |
|
Guanidinoacetate/ |
≤0.036 |
≤0.041 |
≤0.036 |
≤0.042 |
≤0.037 |
≤0.042 |
|
|
33 Years |
34 Years |
35 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
16.3-53.0 |
10.9-42.5 |
16.4-52.7 |
10.8-41.7 |
16.4-52.3 |
10.7-41.0 |
|
Creatinine |
34.9-78.8 |
49.4-98.0 |
35.1-79.4 |
49.5-98.6 |
35.3-79.9 |
49.5-99.2 |
|
Guanidinoacetate |
1.2-2.8 |
1.6-3.5 |
1.2-2.8 |
1.6-3.5 |
1.2-2.8 |
1.6-3.4 |
|
Creatine/ |
≤0.82 |
≤0.45 |
≤0.82 |
≤0.45 |
≤0.82 |
≤0.44 |
|
Guanidinoacetate/ |
≤0.119 |
≤0.192 |
≤0.118 |
≤0.191 |
≤0.118 |
≤0.189 |
|
Guanidinoacetate/ |
≤0.037 |
≤0.042 |
≤0.037 |
≤0.042 |
≤0.037 |
≤0.042 |
|
|
36 Years |
37 Years |
38 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
16.5-52.0 |
10.7-40.2 |
16.7-51.6 |
10.6-39.5 |
16.9-51.3 |
10.6-38.9 |
|
Creatinine |
35.4-80.3 |
49.5-99.8 |
35.6-80.7 |
49.5-100.3 |
35.8-81.0 |
49.6-100.8 |
|
Guanidinoacetate |
1.2-2.8 |
1.6-3.4 |
1.2-2.8 |
1.6-3.4 |
1.2-2.9 |
1.6-3.4 |
|
Creatine/ |
≤0.82 |
≤0.44 |
≤0.82 |
≤0.44 |
≤0.83 |
≤0.44 |
|
Guanidinoacetate/ |
≤0.117 |
≤0.187 |
≤0.115 |
≤0.184 |
≤0.114 |
≤0.182 |
|
Guanidinoacetate/ |
≤0.037 |
≤0.042 |
≤0.037 |
≤0.042 |
≤0.036 |
≤0.042 |
|
|
39 Years |
40 Years |
41 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
17.1-51.1 |
10.6-38.2 |
17.3-50.9 |
10.7-37.7 |
17.5-50.8 |
10.7-37.2 |
|
Creatinine |
35.9-81.4 |
49.6-101.3 |
36.0-81.6 |
49.6-101.7 |
36.1-81.9 |
49.7-102.1 |
|
Guanidinoacetate |
1.2-2.9 |
1.6-3.4 |
1.2-2.9 |
1.6-3.4 |
1.2-2.9 |
1.6-3.4 |
|
Creatine/ |
≤0.83 |
≤0.44 |
≤0.83 |
≤0.44 |
≤0.84 |
≤0.44 |
|
Guanidinoacetate/ |
≤0.113 |
≤0.179 |
≤0.111 |
≤0.176 |
≤0.110 |
≤0.174 |
|
Guanidinoacetate/ |
≤0.036 |
≤0.041 |
≤0.036 |
≤0.041 |
≤0.036 |
≤0.040 |
|
|
42 Years |
43 Years |
44 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
17.7-50.8 |
10.8-36.7 |
17.8-50.8 |
10.9-36.3 |
17.8-50.9 |
11.0-36.0 |
|
Creatinine |
36.2-82.1 |
49.7-102.5 |
36.3-82.4 |
49.8-102.8 |
36.4-82.6 |
49.8-103.1 |
|
Guanidinoacetate |
1.2-3.0 |
1.6-3.3 |
1.2-3.0 |
1.6-3.3 |
1.2-3.0 |
1.6-3.3 |
|
Creatine/ |
≤0.84 |
≤0.44 |
≤0.84 |
≤0.43 |
≤0.84 |
≤0.43 |
|
Guanidinoacetate/ |
≤0.109 |
≤0.172 |
≤0.108 |
≤0.171 |
≤0.107 |
≤0.170 |
|
Guanidinoacetate/ |
≤0.036 |
≤0.039 |
≤0.036 |
≤0.039 |
≤0.036 |
≤0.038 |
|
|
45 Years |
46 Years |
47 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
17.7-51.0 |
11.1-35.6 |
17.6-51.2 |
11.2-35.3 |
17.4-51.4 |
11.3-35.1 |
|
Creatinine |
36.4-82.8 |
49.9-103.4 |
36.5-83.0 |
49.9-103.6 |
36.5-83.2 |
49.9-103.9 |
|
Guanidinoacetate |
1.2-3.0 |
1.7-3.3 |
1.2-3.1 |
1.7-3.3 |
1.2-3.1 |
1.7-3.3 |
|
Creatine/ |
≤0.84 |
≤0.42 |
≤0.83 |
≤0.41 |
≤0.83 |
≤0.40 |
|
Guanidinoacetate/ |
≤0.106 |
≤0.169 |
≤0.106 |
≤0.168 |
≤0.106 |
≤0.167 |
|
Guanidinoacetate/ |
≤0.037 |
≤0.038 |
≤0.037 |
≤0.037 |
≤0.037 |
≤0.037 |
|
|
48 Years |
49 Years |
50 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
17.2-51.7 |
11.5-34.8 |
17.1-51.9 |
11.6-34.6 |
17.0-52.1 |
11.7-34.4 |
|
Creatinine |
36.6-83.4 |
49.9-104.1 |
36.6-83.5 |
49.9-104.2 |
36.7-83.7 |
49.9-104.4 |
|
Guanidinoacetate |
1.2-3.1 |
1.7-3.3 |
1.2-3.1 |
1.7-3.3 |
1.2-3.1 |
1.7-3.3 |
|
Creatine/ |
≤0.82 |
≤0.39 |
≤0.82 |
≤0.38 |
≤0.82 |
≤0.38 |
|
Guanidinoacetate/ |
≤0.106 |
≤0.166 |
≤0.106 |
≤0.164 |
≤0.105 |
≤0.163 |
|
Guanidinoacetate/ |
≤0.038 |
≤0.036 |
≤0.038 |
≤0.036 |
≤0.039 |
≤0.036 |
|
|
51 Years |
52 Years |
53 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
17.0-52.2 |
11.9-34.3 |
17.1-52.3 |
12.0-34.3 |
17.3-52.4 |
12.2-34.3 |
|
Creatinine |
36.8-83.9 |
49.8-104.6 |
36.8-84.0 |
49.8-104.8 |
36.9-84.2 |
49.8-104.9 |
|
Guanidinoacetate |
1.2-3.1 |
1.7-3.3 |
1.2-3.1 |
1.7-3.2 |
1.2-3.1 |
1.6-3.2 |
|
Creatine/ |
≤0.82 |
≤0.37 |
≤0.82 |
≤0.37 |
≤0.82 |
≤0.38 |
|
Guanidinoacetate/ |
≤0.105 |
≤0.161 |
≤0.104 |
≤0.159 |
≤0.103 |
≤0.157 |
|
Guanidinoacetate/ |
≤0.039 |
≤0.036 |
≤0.039 |
≤0.036 |
≤0.039 |
≤0.036 |
|
|
54 Years |
55 Years |
56 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
17.6-52.5 |
12.4-34.3 |
18.1-52.6 |
12.5-34.4 |
18.6-52.7 |
12.6-34.4 |
|
Creatinine |
37.0-84.4 |
49.8-105.0 |
37.1-84.5 |
49.8-105.2 |
37.2-84.7 |
49.8-105.3 |
|
Guanidinoacetate |
1.2-3.1 |
1.6-3.2 |
1.2-3.1 |
1.6-3.2 |
1.2-3.1 |
1.6-3.2 |
|
Creatine/ |
≤0.82 |
≤0.38 |
≤0.83 |
≤0.39 |
≤0.84 |
≤0.40 |
|
Guanidinoacetate/ |
≤0.102 |
≤0.155 |
≤0.100 |
≤0.154 |
≤0.099 |
≤0.152 |
|
Guanidinoacetate/ |
≤0.039 |
≤0.036 |
≤0.039 |
≤0.036 |
≤0.039 |
≤0.036 |
|
|
57 Years |
58 Years |
59 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
19.2-52.9 |
12.7-34.4 |
19.9-53.1 |
12.8-34.3 |
20.5-53.3 |
12.8-34.2 |
|
Creatinine |
37.3-84.9 |
49.8-105.4 |
37.4-85.1 |
49.8-105.5 |
37.6-85.2 |
49.8-105.6 |
|
Guanidinoacetate |
1.2-3.0 |
1.6-3.2 |
1.3-3.0 |
1.6-3.2 |
1.3-3.0 |
1.6-3.2 |
|
Creatine/ |
≤0.84 |
≤0.40 |
≤0.85 |
≤0.41 |
≤0.86 |
≤0.42 |
|
Guanidinoacetate/ |
≤0.098 |
≤0.151 |
≤0.096 |
≤0.151 |
≤0.095 |
≤0.150 |
|
Guanidinoacetate/ |
≤0.039 |
≤0.036 |
≤0.038 |
≤0.036 |
≤0.038 |
≤0.036 |
|
|
60 Years |
61 Years |
62 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
21.0-53.6 |
12.8-34.1 |
21.5-53.9 |
12.7-34.0 |
21.9-54.2 |
12.6-33.9 |
|
Creatinine |
37.8-85.4 |
49.9-105.7 |
38.0-85.5 |
49.9-105.9 |
38.3-85.7 |
49.9-106.0 |
|
Guanidinoacetate |
1.3-2.9 |
1.6-3.2 |
1.3-2.9 |
1.6-3.1 |
1.3-2.9 |
1.6-3.1 |
|
Creatine/ |
≤0.87 |
≤0.43 |
≤0.87 |
≤0.44 |
≤0.88 |
≤0.44 |
|
Guanidinoacetate/ |
≤0.094 |
≤0.150 |
≤0.093 |
≤0.150 |
≤0.093 |
≤0.150 |
|
Guanidinoacetate/ |
≤0.037 |
≤0.036 |
≤0.036 |
≤0.035 |
≤0.036 |
≤0.035 |
|
|
63 Years |
64 Years |
65 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
22.2-54.6 |
12.4-33.7 |
22.3-55.0 |
12.3-33.6 |
22.5-55.5 |
12.2-33.4 |
|
Creatinine |
38.7-85.8 |
50.0-106.1 |
39.1-85.9 |
50.0-106.3 |
39.6-86.1 |
50.1-106.4 |
|
Guanidinoacetate |
1.3-2.8 |
1.6-3.1 |
1.3-2.8 |
1.6-3.1 |
1.3-2.8 |
1.6-3.1 |
|
Creatine/ |
≤0.88 |
≤0.45 |
≤0.89 |
≤0.46 |
≤0.89 |
≤0.46 |
|
Guanidinoacetate/ |
≤0.092 |
≤0.150 |
≤0.092 |
≤0.149 |
≤0.091 |
≤0.149 |
|
Guanidinoacetate/ |
≤0.035 |
≤0.035 |
≤0.034 |
≤0.034 |
≤0.034 |
≤0.034 |
|
|
66 Years |
67 Years |
68 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
22.6-55.9 |
12.3-33.1 |
22.7-56.3 |
12.3-32.8 |
22.9-56.7 |
12.5-32.4 |
|
Creatinine |
40.2-86.2 |
50.2-106.6 |
40.7-86.3 |
50.3-106.7 |
41.3-86.5 |
50.4-106.9 |
|
Guanidinoacetate |
1.3-2.7 |
1.6-3.1 |
1.3-2.7 |
1.6-3.0 |
1.4-2.7 |
1.6-3.0 |
|
Creatine/ |
≤0.90 |
≤0.47 |
≤0.90 |
≤0.48 |
≤0.90 |
≤0.48 |
|
Guanidinoacetate/ |
≤0.091 |
≤0.149 |
≤0.090 |
≤0.148 |
≤0.090 |
≤0.148 |
|
Guanidinoacetate/ |
≤0.034 |
≤0.034 |
≤0.033 |
≤0.034 |
≤0.033 |
≤0.034 |
|
|
69 Years |
70 Years |
≥ 71 Years |
|||
|
Female |
Male |
Female |
Male |
Female |
Male |
|
|
Creatine |
23.2-57.0 |
12.8-32.0 |
23.6-57.2 |
13.1-31.4 |
24.1-57.3 |
13.6-30.8 |
|
Creatinine |
41.9-86.6 |
50.5-107.1 |
42.4-86.8 |
50.7-107.4 |
42.8-86.9 |
50.8-107.6 |
|
Guanidinoacetate |
1.4-2.6 |
1.6-3.0 |
1.4-2.6 |
1.6-3.0 |
1.4-2.5 |
1.5-3.0 |
|
Creatine/ |
≤0.90 |
≤0.48 |
≤0.90 |
≤0.48 |
≤0.90 |
≤0.48 |
|
Guanidinoacetate/ |
≤0.090 |
≤0.148 |
≤0.090 |
≤0.148 |
≤0.090 |
≤0.148 |
|
Guanidinoacetate/ |
≤0.033 |
≤0.034 |
≤0.033 |
≤0.034 |
≤0.033 |
≤0.034 |
Interpretation
Reports include concentrations of guanidinoacetate, creatine, and creatinine, and the calculated analyte ratios. When no significant abnormalities are detected, a simple descriptive interpretation is provided. When abnormal results are detected, a detailed interpretation is given. This interpretation includes an overview of the results and their significance, a correlation to available clinical information, elements of differential diagnosis, and recommendations for additional biochemical testing.
Day(s) Performed
Tuesday
Report Available
3 to 9 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
82540
82565
82542
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CRDPP | Creatine Disorders Panel, P | 104537-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 608071 | Interpretation | 104538-4 |
| 608072 | Creatine | 15045-8 |
| 608073 | Creatinine | 14682-9 |
| 608074 | Guanidinoacetate | 33244-5 |
| 608075 | Creatine/Creatinine | 104539-2 |
| 610624 | Guanidinoacetate/Creatine | 105124-2 |
| 610856 | Guanidinoacetate/Creatinine | 104540-0 |
| 608076 | Reviewed By | 18771-6 |
Forms
1. Biochemical Genetics Patient Information (T602)
2. If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.