IGF-1 is a hormone that manages the effects of growth hormone (GH) in your body. Together, IGF-1 and GH promote normal growth of bones and tissues. GH levels in the blood fluctuate throughout the day depending on your diet and activity levels. But IGF-1 levels remain stable. There is not universal cut-off point for normal IGF-1 levels in adults. Instead, there are different reference ranges for this hormone depending on the age. Here are the optimal IGF-1 levels by age which are based on several studies in children, adolescents, and adults: As you can see from the table, sex does not affect IGF-1 levels significantly.
IGF-1 is a relatively small peptide (molecular weight 7647) that is tightly bound in serum to one of several high affinity binding proteins. 1 IGF-1 has approximately 50% sequence homology with proinsulin and has a number of biological activities similar to insulin. Feb 14, 2023
Results that are within the IGF-1 reference interval will have a Z score between -2.0 and +2.0. Compliance Category FDA Note Both patient age and sex are required for Z-score calculation. Reference intervals have not been established in individuals older than 85 years. Hotline History N/A CPT Codes 84305 Are you an ARUP Client?
Nov 9, 2021
The test ranges listed below represent reference ranges for normal values in nonpregnant adults of common laboratory tests, represented in US traditional units … Insulin-like growth factor 1 (IGF-1; somatomedin-C), serum; Iodine, urine; Iron, serum … Gene test interpretation: ACKR1 (Duffy blood group gene) Normal reference ranges for …
Results of IGF-1 are given in nanograms per milliliter (ng/mL). Normal ranges by age are: - 182 to 780 ng/mL for ages 16 to 24 - 114 to 492 ng/mL for ages 25 to 39 - 90 to 360 ng/mL for ages 40 to 54 - 71 to 290 ng/mL for people 55 and older Upload your lab reports and get interpretation today.
IGF is measured in nanograms per milliliter (ng/mL). The normal ranges are: 182-780 ng/mL for people ages 16-24 114-492 ng/mL for people ages 25-39 90-360 ng/mL for people ages 40-54 71-290…
Based on this papershowing the U-shaped curve of IGF-1 levels and mortality, and age-specific IGF-1 “normal” ranges from the Mayo Clinic laboratories, I have created something close to an “optimal” range for IGF-1 (see table below).
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