Everlywell is the most recognisable at-home health testing brand in the US. If you have Googled “at-home blood test” or “PCOS test kit” at any point in the last few years, you have almost certainly seen their branding.
And that is exactly why this comparison matters.
Because when women with PCOS/PMOS search for at-home testing options, Everlywell frequently appears at the top of the results. The brand recognition is real. The marketing is excellent. But for the specific clinical reality of PCOS — a condition driven by insulin resistance — Everlywell’s tests have one critical gap.
None of their kits test fasting insulin.
Let me walk through this comparison properly so you can make an informed decision.
What Everlywell Tests (And What It Misses)
Everlywell offers a wide range of at-home tests: food sensitivity, thyroid function, STI screening, cholesterol, hormone panels, vitamin levels, and more. Their tests use CLIA-certified lab processing, which is an important quality standard, and the customer experience is clean and well-designed.
For women with PCOS or suspected insulin resistance, the most relevant Everlywell offerings are:
Everlywell Women’s Health Test: Measures estradiol, testosterone, DHEA, FSH, and cortisol. These are useful hormonal markers. They are the downstream effects of insulin dysregulation, not the upstream driver.
Everlywell Metabolism Test: Measures thyroid-stimulating hormone (TSH), testosterone, cortisol, and DHEA-S. Again, useful context. Not insulin.
Everlywell HbA1c Test: Measures average blood glucose over approximately three months. A legitimate and useful metabolic marker. But as explained in detail elsewhere on this site, HbA1c measures what blood sugar has been doing, not what insulin is doing. In early insulin resistance, HbA1c remains completely normal while insulin is already significantly elevated.
Everlywell Heart Health Test: Measures total cholesterol, HDL, LDL, and triglycerides. Useful cardiovascular markers that often shift with insulin resistance, but they do not tell you what is causing the pattern.
What you will not find anywhere in Everlywell’s product line is a standalone fasting insulin test or any panel that includes it. This reflects the broader clinical reality that fasting insulin has historically been underutilized in standard care, and most at-home testing platforms have followed that pattern.
For women with PCOS, this gap is significant.
What the Insara Metabolic Kit Tests
The Insara Metabolic Kit was designed specifically for women with PCOS/PMOS and insulin resistance. It measures five markers chosen precisely because they are most relevant to the metabolic picture of this condition:
| Marker | Why It Matters for PCOS/PMOS |
|---|---|
| Fasting Insulin | The primary direct measurement of insulin resistance. Elevated in up to 95% of women with PCOS. Rises before glucose or HbA1c shift. |
| HbA1c | Three-month glucose average. Provides context alongside fasting insulin. |
| High-Sensitivity CRP | Systemic inflammation marker. Directly linked to insulin resistance. |
| Cholesterol (Total, HDL, LDL) | Cardiovascular risk markers often affected by insulin dysregulation. |
| Triglycerides | One of the earliest lipid-based signs of elevated insulin. Often normalises as insulin drops. |
The kit uses a single finger-prick blood sample collected at home, processed by a CLIA-certified and CAP-accredited laboratory. Results arrive in the Insara App within 3 to 7 business days, with plain-English explanations of each marker and educational context grounded in the research behind the Low Insulin Lifestyle.
Head-to-Head: Insara Kit vs Everlywell
| Feature | Insara Metabolic Kit | Everlywell (best PCOS-relevant panel) |
|---|---|---|
| Fasting insulin | Yes | No — not available in any panel |
| HbA1c | Yes | Yes (standalone test) |
| High-sensitivity CRP | Yes | No |
| Triglycerides | Yes | Yes (Heart Health Test) |
| Cholesterol | Yes | Yes (Heart Health Test) |
| Female hormones (LH, FSH, oestradiol) | No | Yes (Women’s Health Test) |
| Testosterone | No | Yes |
| Thyroid (TSH) | No | Yes (Metabolism Test) |
| Lab certification | CLIA + CAP | CLIA |
| Dedicated app integration | Yes — Insara App | Portal only |
| PCOS-specific education | Yes — full LIL program | No |
| Designed for PCOS | Yes — built specifically for IR/PCOS | No — general women’s health |
| Results with clinical context | Yes — in-app explanations | Basic portal with reference ranges |
The Case for Everlywell
Everlywell is a legitimate, well-run company with CLIA-certified lab processing and a clean user experience. If you want hormonal markers — particularly estradiol, FSH, LH, and testosterone — their Women’s Health Test is a practical at-home option.
For women who want to monitor their thyroid function, check for nutrient deficiencies, or screen general hormonal patterns, Everlywell’s product line is genuinely useful. Their customer service and result delivery are consistently well-reviewed.
The limitation is specific to PCOS and insulin resistance. If the question you are trying to answer is “what is my insulin doing?” — Everlywell cannot answer it.
Why Fasting Insulin Is the One Marker That Changes Everything
For women with PCOS, fasting insulin is the most actionable single measurement available. Here is why:
Every major symptom of PCOS — irregular cycles, androgen excess, acne, hair thinning, difficulty with weight, fatigue, cravings — traces back to the same upstream driver: chronically elevated insulin.
When you test fasting insulin, you are measuring the root signal. Everything else — the testosterone levels, the cycle irregularity, the HbA1c — reflects what that signal has done downstream.
A research-supported optimal threshold for fasting insulin is below 8 mIU/mL. Standard lab reference ranges are typically set much higher, often flagging concerns only above 25 mIU/mL. This means a result of 18 or 20 can come back labelled “normal” from any standard test while still being well above the evidence-based optimal range.
Three clinical studies behind the Insara platform showed fasting insulin dropping by 35 to 52% in eight weeks through the Low Insulin Lifestyle alone. Those changes were measurable because the starting point was measured. Testing Everlywell’s hormonal markers would not have shown those changes, because fasting insulin is not what those panels measure.
Can You Use Both?
Yes, and some women do. Everlywell’s female hormone panels offer useful context on LH, FSH, estradiol, and testosterone that the Insara Metabolic Kit does not cover. If you want a more complete hormonal picture that includes both the metabolic root and the downstream hormonal effects, testing both at the appropriate time is a reasonable approach.
If you can only choose one and your concern is PCOS, insulin resistance, or why your symptoms have not resolved despite other interventions, start with the Insara Metabolic Kit. The measurement that most directly drives every other PCOS marker is the one that should come first.
Frequently Asked Questions
Not directly. Everlywell does not offer a fasting insulin test. They offer HbA1c, cholesterol, and hormonal panels, but none of their panels include fasting insulin, which is the most direct measurement of insulin resistance.
Yes. The Insara Metabolic Kit is processed by a CLIA-certified and CAP-accredited laboratory, meaning it meets the same quality and accuracy standards as clinical laboratory facilities. Finger-prick sample collection is a validated method for the markers it measures.
Most at-home testing platforms have not included fasting insulin because it is not part of standard clinical guidelines for routine screening. Insara was built specifically to address this gap for women with PCOS and insulin resistance.
For the metabolic root cause of PCOS — insulin resistance — the Insara Metabolic Kit is the only at-home option that directly measures fasting insulin. For downstream hormonal markers (estradiol, LH, FSH, testosterone), Everlywell’s Women’s Health Test offers a practical complement.
Visit insara.com/kits/ for current pricing.
Yes. Results from every Insara Metabolic Kit test are stored and displayed in the Insara App, so you can track your trends across multiple tests and see how your markers respond to lifestyle changes.
High-sensitivity CRP (hs-CRP) is a marker of systemic inflammation. Chronic low-grade inflammation and insulin resistance reinforce each other in a self-perpetuating cycle. Women with PCOS typically have elevated CRP alongside elevated insulin. Including CRP in the panel allows you to see the inflammatory picture alongside the metabolic one.
