Table 1.

Zinc levels in a healthy human

Compartments	Levels of zinc
Serum (Normally holds < 1% of total body zinc) [28, 29]	70–250 µg/dL [1] 109–130 µg/dL [30] *62.13–117.72 µg/dL (conversion based on 9.5–18 µM [31]) *78.48 µg/dL–104.64 µg/dL (conversion based on 12–6 µM [29]) 60–120 µg/dL, (59–125 μg/dL for male and 50–103 μg/dL for female) in Bangladesh sample population [32]
Tissues	Muscles store about 50 to 60% of the zinc found in the body [3, 29], followed by bones which have about 30 to 36.7% [3, 29], then skin (4.2%) and liver (3.4%) [29] Prostate, pancreas, and bone, have high zinc concentration ranging from 100 to 250 µg/g [33] Heart, brain, and plasma, have comparatively lower concentration, ranging from 1 to 23 µg/g [33]
Intracellular distribution	30–40% in nucleus, 50% in cytoplasm, and remaining 10–20% associated with membrane organelles [34, 35] Mitochondria (0.14 pM), the mitochondrial matrix (0.2 pM), the endoplasmic reticulum (0.9 pM-5 nM), and the Golgi apparatus (0.2 pM) [28]
Total levels in an adult body	2–3 g [28, 36]

*Conversion performed using MediCalc available at https://www.scymed.com/en/smnxtb/tbcbpgh1.htm