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Erythrocyte zinc protoporphyrin testing in pregnancy.
Acta Obstet Gynecol Scand. 2000 Aug; 79(8):660-6.AO

Abstract

BACKGROUND

To compare the usefulness of serum ferritin, hemoglobin and erythrocyte zinc protoporphyrin estimations as indicators of the need of iron supplementation in pregnancy.

METHODS

In 97 healthy pregnant women serum ferritin, hemoglobin and erythrocyte zinc protoporphyrin concentrations were measured at each trimester period. Iron supplementation was prescribed at hemoglobin values below 113 g/L.

RESULTS

Neither in the first nor in the second trimester differences in serum ferritin and erythrocyte zinc protoporphyrin values have been found between women who got iron therapy prescribed and women who did not get iron therapy, whereas already in the first trimester hemoglobin values were lower in the group that got iron therapy. These results indicate that hemodilution rather than iron deficiency determined which women got iron therapy. In the third trimester 14 out of 80 women without iron supplementation had depleted iron stores and a significant erythrocyte zinc protoporphyrin increase, indicating evolving iron deficiency anemia. However, only five of them showed hemoglobin levels below 113 g/L and got iron therapy. Low serum ferritin levels were found in 23% of the women at booking and in 92% in the third trimester. Serum ferritin levels neither predicted the development of iron deficient erythropoiesis nor of anemia.

CONCLUSIONS

Iron deficiency can neither be diagnosed nor predicted by serum ferritin or hemoglobin measurements at booking or later on in pregnancy. Erythrocyte zinc protoporphyrin measurements can be of help in determining which women have iron deficient erythropoiesis and may benefit by iron therapy.

Authors+Show Affiliations

Laboratory of Hematology, Bosch Medicentrum, 's-Hertogenbosch, The Netherlands.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

10949231

Citation

Harthoorn-Lasthuizen, E J., et al. "Erythrocyte Zinc Protoporphyrin Testing in Pregnancy." Acta Obstetricia Et Gynecologica Scandinavica, vol. 79, no. 8, 2000, pp. 660-6.
Harthoorn-Lasthuizen EJ, Lindemans J, Langenhuijsen MM. Erythrocyte zinc protoporphyrin testing in pregnancy. Acta Obstet Gynecol Scand. 2000;79(8):660-6.
Harthoorn-Lasthuizen, E. J., Lindemans, J., & Langenhuijsen, M. M. (2000). Erythrocyte zinc protoporphyrin testing in pregnancy. Acta Obstetricia Et Gynecologica Scandinavica, 79(8), 660-6.
Harthoorn-Lasthuizen EJ, Lindemans J, Langenhuijsen MM. Erythrocyte Zinc Protoporphyrin Testing in Pregnancy. Acta Obstet Gynecol Scand. 2000;79(8):660-6. PubMed PMID: 10949231.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Erythrocyte zinc protoporphyrin testing in pregnancy. AU - Harthoorn-Lasthuizen,E J, AU - Lindemans,J, AU - Langenhuijsen,M M, PY - 2000/8/19/pubmed PY - 2000/9/9/medline PY - 2000/8/19/entrez SP - 660 EP - 6 JF - Acta obstetricia et gynecologica Scandinavica JO - Acta Obstet Gynecol Scand VL - 79 IS - 8 N2 - BACKGROUND: To compare the usefulness of serum ferritin, hemoglobin and erythrocyte zinc protoporphyrin estimations as indicators of the need of iron supplementation in pregnancy. METHODS: In 97 healthy pregnant women serum ferritin, hemoglobin and erythrocyte zinc protoporphyrin concentrations were measured at each trimester period. Iron supplementation was prescribed at hemoglobin values below 113 g/L. RESULTS: Neither in the first nor in the second trimester differences in serum ferritin and erythrocyte zinc protoporphyrin values have been found between women who got iron therapy prescribed and women who did not get iron therapy, whereas already in the first trimester hemoglobin values were lower in the group that got iron therapy. These results indicate that hemodilution rather than iron deficiency determined which women got iron therapy. In the third trimester 14 out of 80 women without iron supplementation had depleted iron stores and a significant erythrocyte zinc protoporphyrin increase, indicating evolving iron deficiency anemia. However, only five of them showed hemoglobin levels below 113 g/L and got iron therapy. Low serum ferritin levels were found in 23% of the women at booking and in 92% in the third trimester. Serum ferritin levels neither predicted the development of iron deficient erythropoiesis nor of anemia. CONCLUSIONS: Iron deficiency can neither be diagnosed nor predicted by serum ferritin or hemoglobin measurements at booking or later on in pregnancy. Erythrocyte zinc protoporphyrin measurements can be of help in determining which women have iron deficient erythropoiesis and may benefit by iron therapy. SN - 0001-6349 UR - https://www.unboundmedicine.com/medline/citation/10949231/Erythrocyte_zinc_protoporphyrin_testing_in_pregnancy_ L2 - http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=10949231.ui DB - PRIME DP - Unbound Medicine ER -