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IGF-1, LC/MS
Quest Diagnostics1 test optionFrom $42.00
IGF-1, LC/MS
Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
DetailsIGF-1, LC/MS – Insulin-like Growth Factor 1 (IGF-1, or Somatomedin C) is a protein that plays a crucial role in stimulating growth throughout the body. It works closely with Growth Hormone (GH) and is affected by what we eat. IGF-1 moves around in the blood, attached to several proteins, which helps keep its levels stable and prevents big changes in how much IGF-1 is in the blood.
What patients is this test right for?This test is important for diagnosing different conditions related to growth. For example, if someone is not growing as expected (a condition known as Dwarfism due to Hypopituitarism), it might be because they have low levels of IGF-1. On the other hand, very high levels of IGF-1 can indicate acromegaly, a condition where someone grows too much because of too much growth hormone. This test is also used to check if someone's diet is affecting their growth, as not eating enough can lower IGF-1 levels, which then return to normal with proper nutrition.
What type of sample is required for this test?0.5 mL serum. A blood sample is needed.
Additional test information
This test is important for diagnosing different conditions related to growth.
Collection and processing
- Sample type: Serum
- Fasting: No
- Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Serum. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: No. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should be available in 2 – 5 business days after the sample is collected. Timing can change after collection or if a laboratory requires additional review.
About this test
DetailsIGF-1, LC/MS - Insulin-like Growth Factor 1 (IGF-1, or Somatomedin C) is a protein that plays a crucial role in stimulating growth throughout the body. It works closely with Growth Hormone (GH) and is affected by what we eat. IGF-1 moves around in the blood, attached to several proteins, which helps keep its levels stable and prevents big changes in how much IGF-1 is in the blood.
What patients is this test right for?This test is important for diagnosing different conditions related to growth. For example, if someone is not growing as expected (a condition known as Dwarfism due to Hypopituitarism), it might be because they have low levels of IGF-1. On the other hand, very high levels of IGF-1 can indicate acromegaly, a condition where someone grows too much because of too much growth hormone. This test is also used to check if someone's diet is affecting their growth, as not eating enough can lower IGF-1 levels, which then return to normal with proper nutrition.
What type of sample is required for this test?0.5 mL serum. A blood sample is needed.
Additional details
This test is important for diagnosing different conditions related to growth.
Highlighted health areas
- Metabolic function
- Women's health
- Hormones
- Men's health
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- IGF-1, LC/MS
- Z-Score