Lab (Specimen)

Conventional Units

SI Units

Immunoglobulin (serum)

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Immunoglobulin A, Serum

0-30 days: 1-7 mg/dL
1 month: 1-53 mg/dL
2 mo: 3-47 mg/dL
3 mo: 5-46 mg/dL
4 mo: 4-72 mg/dL
5 mo: 8-83 mg/dL
6 mo: 8-67 mg/dL
7-8 mo: 11-89 mg/dL
9-11 mo: 16-83 mg/dL
1 year: 14-105 mg/dL
2 yr: 14-122 mg/dL
3 yr: 22-157 mg/dL
4 yr: 25-152 mg/dL
5-7 yr: 33-200 mg/dL
8-9 yr: 45-234 mg/dL
> 10 yr: 68-378 mg/dL
Immunoglobulin G, Serum

0-30 days: 611-1542 mg/dL
1 month: 241-870 mg/dL
2 mo: 198-577 mg/dL
3 mo: 169-558 mg/dL
4 mo: 188-536 mg/dL
5 mo: 165-781 mg/dL
6 mo: 206-676 mg/dL
7-8 mo: 208-868 mg/dL
9-11 mo: 282-1026 mg/dL
1 year: 331-1164 mg/dL
2 yr: 407-1009 mg/dL
3 yr: 423-1090 mg/dL
4 yr: 444-1187 mg/dL
5-7 yr: 608-1229 mg/dL
8-9 yr: 584-1509 mg/dL
> 10 yr: 768-1632 mg/dL
Immunoglobulin M, Serum

0-30 days: 0-24 mg/dL
1 month: 19-83 mg/dL
2 mo: 16-100 mg/dL
3 mo: 23-85 mg/dL
4 mo: 26-96 mg/dL
5 mo: 31-103 mg/dL
6 mo: 33-97 mg/dL
7-8 mo: 32-120 mg/dL
9-11 mo: 39-142 mg/dL
1 year: 41-164 mg/dL
2 yr: 46-160 mg/dL
3 yr: 45-190 mg/dL
4 yr: 41-186 mg/dL
5-7 yr: 46-197 mg/dL
8-9 yr: 49-230 mg/dL
> 10 yr: 60-263 mg/dL
Immunoglobulin G Subclass 1

Cord blood: 435-1084 mg/dL 
0-2 mo: 218-498 mg/dL
3-5 mo: 143-394 mg/dL 
6-8 mo: 190-388 mg/dL 
9-23 mo: 288-880 mg/dL 
2 yr: 170-950 mg/dL 
3-4 yr: 290-1065 mg/dL
5-6 yr: 330-1065 mg/dL
  7-8 yr: 225-1100 mg/dL
9-10 yr: 390-1235 mg/dL
11-12 yr: 380-1420 mg/dL
13-14 yr: 165-1440 mg/dL
> 15 yr: 240-1118 mg/dL

Immunoglobulin G Subclass 2

Cord blood: 143-453 mg/dL 
0-2 mo: 40-167 mg/dL 
3-5 mo: 23-147 mg/dL 
6-8 mo: 37-60 mg/dL 
9-23 mo: 30-327 mg/dL 
2 yr: 22-440 mg/dL 
3-4 yr: 28-315 mg/dL
5-6 yr: 57-345 mg/dL
7-8 yr: 42-375 mg/dL
9-10 yr: 61-430 mg/dL
11-12 yr: 73-455 mg/dL
13-14 yr: 71-460 mg/dL
> 15 yr: 124-549 mg/dL

Immunoglobulin G Subclass 3

Cord blood: 27-146 mg/dL 
0-2 mo: 4-23 mg/dL 
3-5 mo: 4-70 mg/dL 
6-8 mo: 12-62 mg/dL 
9-23 mo: 13-82 mg/dL 
2 yr: 4-69 mg/dL 
3-4 yr: 4-71 mg/dL
5-6 yr: 8-126 mg/dL
7-8 yr: 9-107 mg/dL
9-10 yr: 10-98 mg/dL
11-12 yr: 16-194 mg/dL
13-14 yr: 12-178 mg/dL
> 15 yr: 21-134 mg/dL

Immunoglobulin G Subclass 4

Cord blood: 1-47 mg/dL 
0-2 mo: 1-33 mg/dL 
3-5 mo: 1-14 mg/dL
6-8 mo: 1-16 mg/dL 
9-23 mo: 1-65 mg/dL 
2 yr: 0-120 mg/dL 
3-4 yr: 0-90 mg/dL
5-6 yr: 2-116 mg/dL
7-8 yr: 0-138 mg/dL
  9-10 yr: 1-95 mg/dL
11-12 yr: 1-153 mg/dL
13-14 yr: 2-143 mg/dL
> 15 yr: 7-89 mg/dL
Immunoglobulin (serum) IgA top of page 81 – 463 mg/dL 0.81 – 4.63 g/L
Immunoglobulin (serum) IgD top of page </= 14 mg/dL </= 0.14 g/L
Immunoglobulin (serum) IgE top of page < 180 U/mL < 432 µg/L
Immunoglobulin (serum) IgG Subclasses top of page

IgG 1:  450 – 900 mg/dL
IgG 2:  180 – 530 mg/dL
IgG 3:  13 – 80 mg/dL
IgG 4:  8 – 100 mg/dL
IgG 1:  4.5 – 9.0 g/L
IgG 2:  1.8 – 5.3 g/L
IgG 3:  0.13 – 0.80 g/L
IgG 4:  0.08 – 1.0 g/L
Immunoglobulin (serum) IgG (total) top of page 723 – 1685 mg/dL 7.23 – 16.85 g/L
Immunoglobulin (serum) IgM top of page 48 – 271 mg/dL 0.48 – 2.71 g/L
Insulin (serum) top of page 5 – 25 µU/mL 36 – 179 pmol/L
Iron (serum) top of page 25 – 170 µg/dL 4 – 30 µmol/L
Iron binding capacity (serum)
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% transferrin saturation =
(100 x total iron) / Total iron-binding capacity
Percent saturation = 12 – 57% % saturation = 0.12 – 0.57

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