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Test Code 2HGA 2-Hydroxyglutaric Acid Chiral Analysis, Quantitative, Random, Urine


Necessary Information


1. Age and sex of patient are required.

2. Biochemical Genetics Patient Information (T602) is recommended, but not required, to be filled out and sent with the specimen to aid in the interpretation of test results.



Specimen Required


Supplies: Urine Tube, 10 mL (T068)

Container/Tube: Plastic, 10-mL urine tube

Specimen Volume: 10 mL

Pediatric: If the collection volume appears insufficient, submit as much specimen as possible in a single container; the laboratory will determine if volume is sufficient for test.

Collection Instructions:

1. Collect a random urine specimen (first morning void preferred)

2. No preservative


Specimen Type

Urine

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Frozen (preferred) 416 days
  Ambient  14 days
  Refrigerated  14 days

Reject Due To

  All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Reference Values

Age

D-2-hydroxyglutaric acid (mmol/mol creatinine)

L-2-hydroxyglutaric acid
(mmol/mol creatinine)

0-11 months

≤14.11

≤17.38

12-23 months

≤13.76

≤17.03

24-35 months

≤13.38

≤16.63

3 years

≤12.96

≤16.18

4 years

≤12.20

≤15.35

5 years

≤11.40

≤14.44

6 years

≤10.56

≤13.46

7 years

≤9.71

≤12.43

8 years

≤8.93

≤11.44

9 years

≤8.21

≤10.50

10 years

≤7.56

≤9.66

11 years

≤6.99

≤8.94

12 years

≤6.47

≤8.33

13 years

≤6.01

≤7.83

14 years

≤5.60

≤7.44

15 years

≤5.23

≤7.14

16 years

≤4.91

≤6.93

17 years

≤4.63

≤6.78

18 years

≤4.40

≤6.69

19 years

≤4.21

≤6.63

20 years

≤4.07

≤6.60

21 years

≤3.96

≤6.59

22 years

≤3.88

≤6.58

23 years

≤3.81

≤6.56

24 years

≤3.76

≤6.54

25 years

≤3.71

≤6.50

26 years

≤3.67

≤6.44

27 years

≤3.63

≤6.37

28 years

≤3.59

≤6.27

29 years

≤3.56

≤6.15

30 years

≤3.54

≤6.02

31 years

≤3.52

≤5.87

32 years

≤3.50

≤5.72

33 years

≤3.49

≤5.57

34 years

≤3.48

≤5.41

35 years

≤3.46

≤5.26

36 years

≤3.45

≤5.13

37 years

≤3.43

≤5.00

38 years

≤3.42

≤4.88

39 years

≤3.40

≤4.78

40 years

≤3.39

≤4.70

41 years

≤3.37

≤4.62

42 years

≤3.35

≤4.55

43 years

≤3.33

≤4.50

44 years

≤3.30

≤4.44

45 years

≤3.28

≤4.40

46 years

≤3.24

≤4.35

47 years

≤3.21

≤4.31

48 years

≤3.17

≤4.27

49 years

≤3.13

≤4.23

50 years

≤3.10

≤4.19

51 years

≤3.07

≤4.16

52 years

≤3.04

≤4.12

53 years

≤3.01

≤4.10

54 years

≤2.99

≤4.07

55 years

≤2.97

≤4.04

56 years

≤2.95

≤4.01

57 years

≤2.93

≤3.98

58 years

≤2.91

≤3.94

59 years

≤2.89

≤3.91

60 years

≤2.87

≤3.87

61 years

≤2.85

≤3.84

62 years

≤2.83

≤3.80

63 years

≤2.79

≤3.78

64 years

≤2.76

≤3.75

65 years

≤2.71

≤3.73

66 years

≤2.67

≤3.72

67 years

≤2.61

≤3.71

68 years

≤2.56

≤3.69

69 years

≤2.50

≤3.68

70 years

≤2.44

≤3.66

71 years

≤2.38

≤3.64

72 years

≤2.32

≤3.61

73 years

≤2.26

≤3.56

74 years

≤2.21

≤3.50

75 years

≤2.16

≤3.43

76 years

≤2.10

≤3.35

77 years

≤2.05

≤3.26

78 years

≤2.00

≤3.17

79 years

≤1.94

≤3.08

80 years

≤1.89

≤2.99

81 years

≤1.84

≤2.91

82 years

≤1.80

≤2.84

83 years

≤1.75

≤2.78

84 years

≤1.71

≤2.73

85 years

≤1.68

≤2.69

86 years

≤1.65

≤2.67

87 years

≤1.64

≤2.65

88 years

≤1.63

≤2.64

≥89 years

≤1.62

≤2.64

Day(s) Performed

Thursday

Report Available

3 to 9 days

Specimen Retention Time

2 months

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

83921 x 2