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Approved lab referenceFrom the archive
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Ask your clinician to use performing-lab range and trend with C4/CH50 and disease activity.

Gene referenceSep 17, 2026
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C3 is the gene name for Complement C3. Learn what a specific result could mean and what to ask about it.

Gene referenceSep 23, 2026
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Makes an enzyme that helps produce a form of folate used in the processing of homocysteine. Common variants are different from rare variants that cause severe MTHFR deficiency.

Gene referenceSep 23, 2026
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ALPL encodes tissue-nonspecific alkaline phosphatase, an enzyme important to bone and tooth mineralization and vitamin B6 metabolism. Persistently low alkaline phosphatase can deserve a different evaluation from a general nutrient deficiency.

Report teachingSep 16, 2026
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Explore folate, vitamin B9, one-carbon metabolism, anemia, homocysteine, SLC19A1, and differences between folate forms and transport pathways.

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