IGF1

Blood Sciences Test

Specimen

Serum

Units

nmol/L

Reference Range

Age	M	F
Based on 2.5 – 97.5 percentiles
≤ 3 MONTHS	2 – 12	2 – 11
3 – 6 MONTHS	2 – 12	2 – 12
6 MONTHS – 1 YEAR	2 – 13	2 – 14
1 – 2 YEAR	2 – 14	3 – 17
2 – 3 YEAR	2 – 15	4 – 20
3 – 4 YEAR	4 – 18	6 – 24
4 – 5 YEAR	5 – 20	7 – 28
5 – 6 YEAR	6 – 24	8 – 33
6 – 7 YEAR	8 – 28	10 – 37
7 – 8 YEAR	9 – 33	11 – 42
8 – 9 YEAR	10 – 39	13 – 48
9 – 10 YEAR	11 – 45	15 – 52
10 – 11 YEAR	12 – 51	16 – 56
11 – 12 YEAR	13 – 57	17 – 59
12 – 13 YEAR	14 – 61	18 – 61
13 – 14 YEAR	15 – 64	19 – 63
14 – 15 YEAR	16 – 66	20 – 64
15 – 16 YEAR	16 – 66	20 – 64
16 – 17 YEAR	17 – 65	20 – 63
17 – 18 YEAR	17 – 62	20 – 61
18 – 19 YEAR	18 – 59	20 – 59
19 – 20 YEAR	18 – 55	20 – 56
20 – 21 YEAR	18 – 52	19 – 54
21 – 22 YEAR	18 – 48	19 – 51
22 – 23 YEAR	18 – 46	18 – 49
23 – 24 YEAR	18 – 43	18 – 47
24 – 25 YEAR	17 – 41	17 – 45
25 – 26 YEAR	17 – 39	17 – 43
26 – 27 YEAR	17 – 37	16 – 41
27 – 28 YEAR	16 – 36	15 – 40
28 – 29 YEAR	16 – 34	15 – 38
29 – 30 YEAR	16 – 34	15 – 37
30 – 31 YEAR	15 – 33	14 – 36
31 – 32 YEAR	15 – 33	14 – 34
32 – 33 YEAR	15 – 32	14 – 33
33 – 34 YEAR	15 – 32	13 – 32
34 – 35 YEAR	14 – 32	13 – 32
35 – 36 YEAR	14 – 31	13 – 31
36 – 37 YEAR	14 – 31	13 – 31
37 – 38 YEAR	13 – 31	12 – 30
38 – 39 YEAR	13 – 30	12 – 30
39 – 40 YEAR	13 – 30	12 – 30
40 – 41 YEAR	13 – 30	12 – 29
41 – 42 YEAR	12 – 29	12 – 29
42 – 43 YEAR	12 – 29	11 – 29
43 – 44 YEAR	12 – 29	11 – 29
44 – 45 YEAR	12 – 28	11 – 29
46 – 47 YEAR	11 – 28	11 – 29
47 – 48 YEAR	11 – 28	11 – 29
48 – 49 YEAR	11 – 27	10 – 29
49 – 50 YEAR	11 – 27	10 – 28
50 – 51 YEAR	10 – 27	10 – 28
51 – 52 YEAR	10 – 27	10 – 28
52 – 53 YEAR	10 – 26	10 – 28
53 – 54 YEAR	10 – 26	9 – 28
54 – 55 YEAR	9 – 26	9 – 27
55 – 56 YEAR	9 – 26	9 – 27
56 – 57 YEAR	9 – 26	9 – 26
57 – 58 YEAR	9 – 25	9 – 26
58 – 59 YEAR	8 – 25	8 – 25
59 – 60 YEAR	8 – 25	8 – 25
60 – 61 YEAR	8 – 25	8 – 24
61 – 62 YEAR	8 – 25	8 – 24
62 – 63 YEAR	8 – 25	8 – 23
63 – 64 YEAR	8 – 25	8 – 23
64 – 65 YEAR	8 – 25	8 – 23
65 – 66 YEAR	8 – 24	7 – 22
66 – 67 YEAR	7 – 24	7 – 22
67 – 68 YEAR	7 – 24	7 – 22
68 – 69 YEAR	7 – 24	7 – 21
69 – 70 YEAR	7 – 24	7 – 21
70 – 71 YEAR	7 – 24	7 – 21
71 – 72 YEAR	7 – 24	7 – 21
72 – 73 YEAR	7 – 24	7 – 21
73 – 74 YEAR	7 – 24	7 – 21
74 – 75 YEAR	7 – 24	7 – 21
75 – 76 YEAR	7 – 24	7 – 21
76 – 77 YEAR	7 – 24	7 – 21
77 – 78 YEAR	7 – 24	7 – 21
78 – 79 YEAR	7 – 24	7 – 21
79 – 80 YEAR	6 – 24	7 – 21
80 YEAR +		7 – 22

Test Usage

The action of human growth hormone (hGH) from the pituitary is mediated through IGF-1 which is formed in the liver. As well as its effects on growth, it has insulin-like actions. IGF-1 synthesis is suppressed by malnutrition as well as hGH deficiency.

IGF-1 and hGH are measured in suspected acromegaly and in pituitary dwarfism.

Turnaround Time

7 working days

Availability

In-house

Accreditation

Please note this test is not UKAS accredited

Specimen Labelling Procedure