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High vitamin B12 level in the blood

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High vitamin B12 level in the blood
Last update: 03/05/2022

What is high vitamin B12 level in the blood called?

  • Hypercobalaminemia

What is the normal level of vitamin B12 in the blood?

If you need to know which are the vitamin B12 reference ranges or you require more information about vitamin B12 in a blood test, you can visit normal vitamin B12 in a blood test.

What does a high vitamin B12 level in the blood mean?

A high level of vitamin B12 in the blood, also called cobalamin, is not common and may be seen in liver or kidney disorders, autoimmune myeloproliferative syndromes and in some types of hematologic neoplasms such as leukemia.

Vitamin B12 blood values are usually given in pg/ml but sometimes you can see these values in pmol/l following the International System of Units (SI). In case your values are in pmol/l you can convert them using this tool:

pmol/l

Hypercobalinemia or a high vitamin B12 blood level means:

  • Severe hypercobalaminemia (> 835 pg/ml in adults) :

    A high level of vitamin B12 in the blood, also called cobalamin, is not common and may be seen in liver or kidney disorders, autoimmune myeloproliferative syndromes and in some types of hematologic neoplasms such as leukemia.

    Vitamin B12 blood values are usually given in pg/ml but sometimes you can see these values in pmol/l following the International System of Units (SI). In case your values are in pmol/l you can convert them using this tool:

Which factors can raise the vitamin B12 level in the blood?

There are some health circumstances than can raise your vitamin B12 level in the blood:

  • Blood transfusion

Which diseases can raise your vitamin B12 level in the blood?

A vitamin B12 level in the blood higher than normal may be a sign of the following diseases:

  • Leukemia
  • Chronic myeloid leukemia
  • Acute myeloid leukemia
  • Essential thrombocythemia

What can I do to lower the vitamin B12 level in the blood?

To reduce the level of vitamin B12 in the blood is necessary to know the underlying cause and follow the appropriate treatment for it.

Where can I find more information about vitamin B12 in a blood test?

You can visit our pages about:

Which values are considered a high vitamin B12 in a blood test?

The following values are considered to be above the normal range:

IMPORTANT: These levels are expressed in pg/ml. They are an example of a healthy adult of about 45 years old with no known disease and not taking any medication. The ranges can be different depending on the laboratory or on your personal circumstances.

Vitamin B12
Severe hypercobalaminemia
836 pg/ml837 pg/ml838 pg/ml839 pg/ml840 pg/ml841 pg/ml842 pg/ml843 pg/ml
844 pg/ml845 pg/ml846 pg/ml847 pg/ml848 pg/ml849 pg/ml850 pg/ml851 pg/ml
852 pg/ml853 pg/ml854 pg/ml855 pg/ml856 pg/ml857 pg/ml858 pg/ml859 pg/ml
860 pg/ml861 pg/ml862 pg/ml863 pg/ml864 pg/ml865 pg/ml866 pg/ml867 pg/ml
868 pg/ml869 pg/ml870 pg/ml871 pg/ml872 pg/ml873 pg/ml874 pg/ml875 pg/ml
876 pg/ml877 pg/ml878 pg/ml879 pg/ml880 pg/ml881 pg/ml882 pg/ml883 pg/ml
884 pg/ml885 pg/ml886 pg/ml887 pg/ml888 pg/ml889 pg/ml890 pg/ml891 pg/ml
892 pg/ml893 pg/ml894 pg/ml895 pg/ml896 pg/ml897 pg/ml898 pg/ml899 pg/ml
900 pg/ml901 pg/ml902 pg/ml903 pg/ml904 pg/ml905 pg/ml906 pg/ml907 pg/ml
908 pg/ml909 pg/ml910 pg/ml911 pg/ml912 pg/ml913 pg/ml914 pg/ml915 pg/ml
916 pg/ml917 pg/ml918 pg/ml919 pg/ml920 pg/ml921 pg/ml922 pg/ml923 pg/ml
924 pg/ml925 pg/ml926 pg/ml927 pg/ml928 pg/ml929 pg/ml930 pg/ml931 pg/ml
932 pg/ml933 pg/ml934 pg/ml935 pg/ml936 pg/ml937 pg/ml938 pg/ml939 pg/ml
940 pg/ml941 pg/ml942 pg/ml943 pg/ml944 pg/ml945 pg/ml946 pg/ml947 pg/ml
948 pg/ml949 pg/ml950 pg/ml951 pg/ml952 pg/ml953 pg/ml954 pg/ml955 pg/ml
956 pg/ml957 pg/ml958 pg/ml959 pg/ml960 pg/ml961 pg/ml962 pg/ml963 pg/ml
964 pg/ml965 pg/ml966 pg/ml967 pg/ml968 pg/ml969 pg/ml970 pg/ml971 pg/ml
972 pg/ml973 pg/ml974 pg/ml975 pg/ml976 pg/ml977 pg/ml978 pg/ml979 pg/ml
980 pg/ml981 pg/ml982 pg/ml983 pg/ml984 pg/ml985 pg/ml986 pg/ml987 pg/ml
988 pg/ml989 pg/ml990 pg/ml991 pg/ml992 pg/ml993 pg/ml994 pg/ml995 pg/ml
996 pg/ml997 pg/ml998 pg/ml999 pg/ml1000 pg/ml1001 pg/ml1002 pg/ml1003 pg/ml
1004 pg/ml1005 pg/ml1006 pg/ml1007 pg/ml1008 pg/ml1009 pg/ml1010 pg/ml1011 pg/ml
1012 pg/ml1013 pg/ml1014 pg/ml1015 pg/ml1016 pg/ml1017 pg/ml1018 pg/ml1019 pg/ml
1020 pg/ml1021 pg/ml1022 pg/ml1023 pg/ml1024 pg/ml1025 pg/ml1026 pg/ml1027 pg/ml
1028 pg/ml1029 pg/ml1030 pg/ml1031 pg/ml1032 pg/ml1033 pg/ml1034 pg/ml1035 pg/ml
1036 pg/ml1037 pg/ml1038 pg/ml1039 pg/ml1040 pg/ml1041 pg/ml1042 pg/ml1043 pg/ml
1044 pg/ml1045 pg/ml1046 pg/ml1047 pg/ml1048 pg/ml1049 pg/ml1050 pg/ml1051 pg/ml
1052 pg/ml1053 pg/ml1054 pg/ml1055 pg/ml1056 pg/ml1057 pg/ml1058 pg/ml1059 pg/ml
1060 pg/ml1061 pg/ml1062 pg/ml1063 pg/ml1064 pg/ml1065 pg/ml1066 pg/ml1067 pg/ml
1068 pg/ml1069 pg/ml1070 pg/ml1071 pg/ml1072 pg/ml1073 pg/ml1074 pg/ml1075 pg/ml
1076 pg/ml1077 pg/ml1078 pg/ml1079 pg/ml1080 pg/ml1081 pg/ml1082 pg/ml1083 pg/ml
1084 pg/ml1085 pg/ml1086 pg/ml1087 pg/ml1088 pg/ml1089 pg/ml1090 pg/ml1091 pg/ml
1092 pg/ml1093 pg/ml1094 pg/ml1095 pg/ml1096 pg/ml1097 pg/ml1098 pg/ml1099 pg/ml
1100 pg/ml1101 pg/ml1102 pg/ml1103 pg/ml1104 pg/ml1105 pg/ml1106 pg/ml1107 pg/ml
1108 pg/ml1109 pg/ml1110 pg/ml1111 pg/ml1112 pg/ml1113 pg/ml1114 pg/ml1115 pg/ml
1116 pg/ml1117 pg/ml1118 pg/ml1119 pg/ml1120 pg/ml1121 pg/ml1122 pg/ml1123 pg/ml
1124 pg/ml1125 pg/ml1126 pg/ml1127 pg/ml1128 pg/ml1129 pg/ml1130 pg/ml1131 pg/ml
1132 pg/ml1133 pg/ml1134 pg/ml1135 pg/ml1136 pg/ml1137 pg/ml1138 pg/ml1139 pg/ml
1140 pg/ml1141 pg/ml1142 pg/ml1143 pg/ml1144 pg/ml1145 pg/ml1146 pg/ml1147 pg/ml
1148 pg/ml1149 pg/ml1150 pg/ml1151 pg/ml1152 pg/ml1153 pg/ml1154 pg/ml1155 pg/ml
1156 pg/ml1157 pg/ml1158 pg/ml1159 pg/ml1160 pg/ml1161 pg/ml1162 pg/ml1163 pg/ml
1164 pg/ml1165 pg/ml1166 pg/ml1167 pg/ml1168 pg/ml1169 pg/ml1170 pg/ml1171 pg/ml
1172 pg/ml1173 pg/ml1174 pg/ml1175 pg/ml1176 pg/ml1177 pg/ml1178 pg/ml1179 pg/ml
1180 pg/ml1181 pg/ml1182 pg/ml1183 pg/ml1184 pg/ml1185 pg/ml1186 pg/ml1187 pg/ml
1188 pg/ml1189 pg/ml1190 pg/ml1191 pg/ml1192 pg/ml1193 pg/ml1194 pg/ml1195 pg/ml
1196 pg/ml1197 pg/ml1198 pg/ml1199 pg/ml1200 pg/ml1201 pg/ml1202 pg/ml1203 pg/ml
1204 pg/ml1205 pg/ml1206 pg/ml1207 pg/ml1208 pg/ml1209 pg/ml1210 pg/ml1211 pg/ml
1212 pg/ml1213 pg/ml1214 pg/ml1215 pg/ml1216 pg/ml1217 pg/ml1218 pg/ml1219 pg/ml
1220 pg/ml1221 pg/ml1222 pg/ml1223 pg/ml1224 pg/ml1225 pg/ml1226 pg/ml1227 pg/ml
1228 pg/ml1229 pg/ml1230 pg/ml1231 pg/ml1232 pg/ml1233 pg/ml1234 pg/ml1235 pg/ml
1236 pg/ml1237 pg/ml1238 pg/ml1239 pg/ml1240 pg/ml1241 pg/ml1242 pg/ml1243 pg/ml
1244 pg/ml1245 pg/ml1246 pg/ml1247 pg/ml1248 pg/ml1249 pg/ml1250 pg/ml1251 pg/ml
1252 pg/ml1253 pg/ml1254 pg/ml1255 pg/ml1256 pg/ml1257 pg/ml1258 pg/ml1259 pg/ml
1260 pg/ml1261 pg/ml1262 pg/ml1263 pg/ml1264 pg/ml1265 pg/ml1266 pg/ml1267 pg/ml
1268 pg/ml1269 pg/ml1270 pg/ml1271 pg/ml1272 pg/ml1273 pg/ml1274 pg/ml1275 pg/ml
1276 pg/ml1277 pg/ml1278 pg/ml1279 pg/ml1280 pg/ml1281 pg/ml1282 pg/ml1283 pg/ml
1284 pg/ml1285 pg/ml1286 pg/ml1287 pg/ml1288 pg/ml1289 pg/ml1290 pg/ml1291 pg/ml
1292 pg/ml1293 pg/ml1294 pg/ml1295 pg/ml1296 pg/ml1297 pg/ml1298 pg/ml1299 pg/ml
1300 pg/ml1301 pg/ml1302 pg/ml1303 pg/ml1304 pg/ml1305 pg/ml1306 pg/ml1307 pg/ml
1308 pg/ml1309 pg/ml1310 pg/ml1311 pg/ml1312 pg/ml1313 pg/ml1314 pg/ml1315 pg/ml
1316 pg/ml1317 pg/ml1318 pg/ml1319 pg/ml1320 pg/ml1321 pg/ml1322 pg/ml1323 pg/ml
1324 pg/ml1325 pg/ml1326 pg/ml1327 pg/ml1328 pg/ml1329 pg/ml1330 pg/ml1331 pg/ml
1332 pg/ml1333 pg/ml1334 pg/ml1335 pg/ml1336 pg/ml1337 pg/ml1338 pg/ml1339 pg/ml
1340 pg/ml1341 pg/ml1342 pg/ml1343 pg/ml1344 pg/ml1345 pg/ml1346 pg/ml1347 pg/ml
1348 pg/ml1349 pg/ml1350 pg/ml1351 pg/ml1352 pg/ml1353 pg/ml1354 pg/ml1355 pg/ml
1356 pg/ml1357 pg/ml1358 pg/ml1359 pg/ml1360 pg/ml1361 pg/ml1362 pg/ml1363 pg/ml
1364 pg/ml1365 pg/ml1366 pg/ml1367 pg/ml1368 pg/ml1369 pg/ml1370 pg/ml1371 pg/ml
1372 pg/ml1373 pg/ml1374 pg/ml1375 pg/ml1376 pg/ml1377 pg/ml1378 pg/ml1379 pg/ml
Medically reviewed by our Medical staff on 03/05/2022

Bibliography

  • Concise Book of Medical Laboratory Technology: Methods and Interpretations. 2nd Edition. 2015. Ramnik Sood. ISBN: 978-93-5152-333-8. Pag. 250.
  • Hematology. Basic principles and practice 7th edition. Ronald Hoffman, Edward J. Benz Jr, Leslie E. Silberstein, Helen E. Heslop, Jeffrey I. Weitz, John Anastasi, Mohamed E. Salama, Syed Ali Abutalib. chapter73, Pag 2625. 2018. ISBN: 978-0-323-35762-3.
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