Medical & affiliate disclosure: CTX Stat provides educational laboratory information and is not a substitute for professional medical advice, diagnosis, or treatment. CTX Stat may receive compensation from some outbound provider links when an affiliate program is active; provider comparisons and rankings are based on consumer fit, effective cost, access, policies, and reputation—not commission.
Quick take
- Typical self-pay IGF-1 blood test cost: roughly $79 to $139 from commonly available online lab-ordering services when mandatory provider, physician, service, or draw fees are included.
- Lowest advertised price is not always the lowest total cost. Some providers add a physician, requisition, lab-processing, or service fee at checkout.
- Most IGF-1 tests require an in-person blood draw at a national patient service center, usually Quest Diagnostics or Labcorp, rather than an at-home finger-stick sample.
- Fasting is usually not required, but many providers advise stopping high-dose biotin supplements for at least 72 hours before collection because biotin can interfere with some lab assays. (ondemand.labcorp.com)
- IGF-1 is not a stand-alone diagnosis. It helps evaluate growth hormone activity, but abnormal results should be reviewed with a clinician, especially if you have symptoms of acromegaly, pituitary disease, growth hormone deficiency, or are using growth-hormone-related drugs. (medlineplus.gov)
Bottom line: For a single self-pay IGF-1 test, compare the effective total cost: test price + mandatory ordering or physician fee + any required draw or service fee. If you already use Labcorp locations and want the simplest direct brand experience, Labcorp OnDemand lists IGF-1 at $139. If price is the main factor, several third-party ordering services list totals around $79–$90, but availability, state restrictions, and customer support vary.
IGF-1 blood test cost comparison
The table below compares consumer-facing IGF-1 blood test options that were publicly visible at the time of review. Prices change often, promotional codes may appear or disappear, and state rules can block ordering even when a product page is visible. The fair way to compare is the cash price you would actually pay before the blood draw, not the headline test price alone.
| Provider | Listed IGF-1 test price | Mandatory fee noted | Estimated effective self-pay total | Collection / workflow notes |
|---|---|---|---|---|
| RSC Health | $79 | No extra draw or physician fee stated | $79 | Advertises all-in pricing, electronic lab order, results usually in 2–3 business days, and 4,500+ testing centers in 48 states. (rschealth.com) |
| Request A Test | $75 for Lab Option 1; $109 for Lab Option 2 | $4 per-order service fee | $79 for Lab Option 1; $113 for Lab Option 2 | Offers two laboratory options, blood specimen collection, typical turnaround 3–5 business days, and a lab-finder workflow. (requestatest.com) |
| Walk-In Lab | $75 | $6 per-order physician fee | $81 | Uses online ordering with in-person collection; lists CPT 84305, test codes 010363 and 16293, no fasting, 72-hour biotin hold, and estimated results in 6–8 days. (walkinlab.com) |
| Ulta Lab Tests | $73.95 reported by lab-price index | $12.95 requisition charge reported | $86.90 | Commonly uses Quest collection for this test; a third-party lab-price index reported NY, NJ, and RI restrictions for the Quest IGF-1 option. Confirm the cart total before purchase. (findlabtest.com) |
| True Health Labs | $119 | No added collection fee stated on product page | $119 | Quest-based IGF-1 listing; page states 1–4 business day turnaround, HSA/FSA approval, and unavailability when address and testing are in NY, NJ, MA, or RI. (truehealthlabs.com) |
| HealthLabs.com | $129 | No mandatory fee visible in the browsed product listing | $129 | Listed under male hormone tests as an IGF-1 blood test; HealthLabs commonly emphasizes local lab collection through national networks. (healthlabs.com) |
| Labcorp OnDemand | $139 | No separate mandatory fee visible on the IGF-1 product page | $139 | Direct Labcorp-branded order, in-person Labcorp collection, age 18–100, results listed as 2–4 days after sample reaches the lab, and HSA/FSA accepted. (ondemand.labcorp.com) |
How we compared prices
For this page, “IGF-1 blood test cost” means the out-of-pocket consumer price for one insulin-like growth factor 1 blood test ordered online without billing insurance. We counted mandatory fees when they were publicly shown: physician review fees, service fees, requisition fees, lab-processing fees, and required draw fees. We did not subtract coupon codes unless the provider clearly described the listed price as all-in; limited-time discounts can make one provider look cheaper for a week and then disappear.
We also compared practical buying factors: whether the order goes to Quest or Labcorp, whether the lab order is electronic or must be printed, expected result timing, whether the test includes a Z-score, and whether state restrictions may block ordering. This is important because two products can have the same CPT code but feel very different to a consumer: one may have a polished portal and direct lab network, while another may be less expensive but require printing a requisition or navigating more customer-service steps.
What the IGF-1 test measures
An IGF-1 test measures insulin-like growth factor 1 in blood. IGF-1 is produced mainly in response to growth hormone from the pituitary gland and is used as a more stable marker of average growth hormone activity because growth hormone itself is released in pulses. MedlinePlus describes IGF-1 testing as a way to help evaluate too much or too little growth hormone, including conditions such as acromegaly, gigantism, and growth hormone deficiency. (medlineplus.gov)
Clinically, IGF-1 may be ordered when a person has physical features or symptoms that suggest growth hormone excess, such as enlarging hands or feet, changes in facial features, headaches, sweating, joint pain, sleep apnea, or metabolic complications. It may also be used when growth hormone deficiency is being considered, especially in the context of low energy, reduced muscle mass, low bone density, pituitary disease, or childhood growth concerns. The Endocrine Society guideline notes that a normal IGF-1 level effectively excludes acromegaly in many clinical contexts, while an elevated result generally requires confirmatory evaluation rather than self-treatment. (academic.oup.com)
Why prices vary so much
IGF-1 pricing varies because online lab services are not all selling the same consumer experience, even when the blood test itself is similar. A lower-cost service may be reselling access to a Quest or Labcorp test code with a separate physician or requisition fee. A higher-cost direct lab option may include more integrated ordering, results delivery, customer support, and a large patient service center network under one brand.
Several factors can change your final cost:
- Ordering clinician review: Direct-access tests usually still require an authorized clinician or provider entity to approve the order. Some companies include this in the listed price; others add it as a line-item fee.
- Collection network: Quest-based and Labcorp-based options may have different local availability, appointment times, and state restrictions.
- State rules: Some direct-access lab orders are blocked in states such as New York, New Jersey, Rhode Island, Maryland, Massachusetts, Arizona, Hawaii, or Puerto Rico depending on the provider and lab network. Quest’s own consumer testing help page says Quest Health tests are not currently available in Arizona, Hawaii, or Puerto Rico, and individual tests may have additional restrictions. (questhealth.com)
- Included result components: Some Quest IGF-1 options include an age- and sex-adjusted Z-score; some Labcorp-based options may report IGF-1 differently. Always read the sample report if a Z-score matters to your clinician.
- Customer support and refund rules: Lower-cost services can still be legitimate, but support, refund windows, result troubleshooting, and lab-order delivery can differ.
Choosing a provider: cost, convenience, and review patterns
If the cheapest all-in price is your priority, start with providers that clearly list every mandatory fee before checkout. RSC Health and Request A Test showed an effective $79 total for their lowest IGF-1 option, while Walk-In Lab showed $81 after its $6 physician fee. If you prefer a direct relationship with the lab that performs the draw, Labcorp OnDemand’s $139 price may be easier to understand even though it is not the lowest listed price. (rschealth.com)
Public customer-review signals should be treated as context, not a medical-quality ranking. Walk-In Lab’s own reviews page reports a 4.8/5 average based on Verified Reviews, Facebook, and Google, and its Trustpilot page showed an “Excellent” profile with roughly 6,000 reviews; recent feedback included both praise for easy service and criticism of added physician fees. (walkinlab.com)Ulta Lab Tests showed a 4.5 Trustpilot score from 144 reviews and an A+ BBB profile, but BBB’s customer-review average was based on a small number of reviews. (trustpilot.com)HealthLabs.com showed a 3.8 Trustpilot score from more than 4,000 reviews, with recent complaints about portal and customer-service issues mixed with positive reviews. (trustpilot.com)Labcorp OnDemand’s Trustpilot profile had very few reviews, so its 2.8 score should not be overinterpreted; the direct Labcorp product page is more useful for understanding price, age limits, collection, and turnaround. (trustpilot.com)
Preparation: do you need to fast?
Most consumer IGF-1 listings say fasting is not required. Labcorp OnDemand and Request A Test advise people taking biotin supplements to wait at least 72 hours after the last dose before the blood draw, and Walk-In Lab gives the same 72-hour biotin instruction. (ondemand.labcorp.com)Biotin is common in hair, skin, and nail supplements and can interfere with certain immunoassay-based lab tests; Quest Diagnostics has published clinical education material on biotin interference and notes that patients may be told to wait before testing. (questdiagnostics.com)
Practical preparation tips:
- Bring the exact lab requisition or order confirmation if your provider requires printing.
- Use the same lab network for repeat testing when possible, because IGF-1 methods and reference ranges can differ.
- Tell your clinician about growth hormone therapy, peptides or secretagogues, estrogen therapy, oral contraceptives, liver disease, kidney disease, diabetes, thyroid disease, pregnancy, recent major illness, and nutritional changes, because these can affect interpretation.
- Avoid interpreting a single borderline result in isolation. Retesting, confirmatory testing, or endocrinology referral may be appropriate depending on symptoms and the degree of abnormality.
How to read IGF-1 results safely
Your result should be interpreted against the reference interval for your age, sex, and the lab’s method. IGF-1 is naturally higher during puberty and tends to decline with age. A result may also include a Z-score, which shows how far your value is from the expected average for a comparable population. A Z-score can be useful because a raw IGF-1 number that is normal for one age group may be high or low for another.
High IGF-1 can occur with growth hormone excess, including acromegaly in adults or gigantism in children, but it can also be influenced by lab variation and clinical context. The Endocrine Society guideline recommends IGF-1 screening when acromegaly is clinically suspected and notes that confirmatory testing may include growth hormone suppression testing during an oral glucose tolerance test. (academic.oup.com)
Low IGF-1 may be seen with growth hormone deficiency, pituitary disorders, malnutrition, poorly controlled chronic disease, liver disease, and other endocrine problems. In adults, MedlinePlus notes that growth hormone deficiency can be associated with reduced muscle mass and low bone density, but IGF-1 alone does not prove the cause. (medlineplus.gov)
When self-pay testing makes sense—and when it does not
Self-pay IGF-1 testing can make sense if you are price-shopping a clinician-recommended lab, repeating a stable monitoring test, or trying to document a result before an appointment. It may also be useful for people with high deductibles when the cash price is lower than the likely insurance-processed cost.
It is not a good substitute for medical care if you have progressive physical changes, vision symptoms, severe headaches, signs of pituitary disease, a child with growth concerns, or abnormal results from previous endocrine testing. In those situations, the test is only one part of the workup. You may need a clinician-ordered panel, confirmatory growth hormone testing, pituitary imaging, medication review, or specialist referral.
FAQs
How much does an IGF-1 blood test cost without insurance?
Common self-pay online prices range from about $79 to $139 when mandatory fees are included. Some services advertise a lower test price but add a physician, requisition, or service fee at checkout.
Is the IGF-1 test covered by insurance?
Insurance coverage depends on your plan, diagnosis code, medical necessity, and whether the ordering clinician and lab are in network. Most direct-to-consumer lab services do not bill insurance; you pay the listed cash price and may receive a receipt, but reimbursement is not guaranteed.
Is Labcorp or Quest better for IGF-1?
Neither is automatically better for every person. Quest-based options often include the Quest IGF-1, LC/MS test code 16293, while Labcorp’s IGF-1 test is test number 010363. The best choice is usually the network your clinician prefers, the collection site near you, and the method/reference range you can use consistently for repeat testing. (walkinlab.com)
Do I need a doctor’s order?
You usually do not need to visit your own doctor before buying a direct-access IGF-1 test, but the test still generally requires an authorized healthcare professional or provider entity to review and approve the order. Labcorp OnDemand states that all OnDemand testing requires an order from an authorized healthcare professional. (ondemand.labcorp.com)
Can I order an IGF-1 test in New York?
Availability depends on the provider and lab network. Many direct-access Quest-based listings exclude New York, New Jersey, and Rhode Island, while some providers advertise broader coverage. Always enter your billing address and intended collection state before relying on a listed price.
Do I need to stop biotin before an IGF-1 test?
Many consumer IGF-1 test pages recommend stopping biotin for at least 72 hours before collection. Do not stop prescribed medications without asking your clinician, but high-dose over-the-counter hair, skin, and nail supplements are worth reviewing before testing. (ondemand.labcorp.com)
What if my IGF-1 result is high?
Do not self-diagnose acromegaly or start treatment based on one result. Review the number, reference range, Z-score if available, symptoms, medications, and repeat or confirmatory testing plan with a clinician. A clinician may order an oral glucose tolerance test with growth hormone measurements if growth hormone excess is suspected. (academic.oup.com)
What if my IGF-1 result is low?
A low result can reflect growth hormone deficiency, nutrition, chronic illness, liver or kidney disease, thyroid problems, age, or lab variation. Your clinician may compare the result with symptoms and other hormone tests before deciding whether additional pituitary evaluation is needed.
Educational disclaimer
This article is for general educational purposes only and is not a diagnosis, treatment plan, or substitute for care from a licensed healthcare professional. IGF-1 results should be interpreted with your medical history, symptoms, medications, and the reference range from the laboratory that performed the test.
Sources
- MedlinePlus: IGF-1 blood test overview and clinical uses. (medlineplus.gov)
- Endocrine Society clinical practice guideline on acromegaly. (academic.oup.com)
- Labcorp OnDemand IGF-1 product page and Labcorp IGF-1 test listing. (ondemand.labcorp.com)
- Walk-In Lab IGF-1 product page. (walkinlab.com)
- Request A Test IGF-1 product page. (requestatest.com)
- RSC Health IGF-1 product page. (rschealth.com)
- True Health Labs IGF-1 product page and HealthLabs hormone-test listing. (truehealthlabs.com)
- Quest Diagnostics biotin interference and Quest Health state availability information. (questdiagnostics.com)
