Leptin

Description

What is the HbA1c with eAG Test?

The HbA1c with eAG Test from BiomarkersLabs.com measures HbA1c and simultaneously reports the Estimated Average Glucose (eAG) — a calculated value that translates the HbA1c percentage into an equivalent average blood glucose concentration in mmol/L or mg/dL. The eAG is derived from the validated mathematical relationship between HbA1c and average glucose established by the ADAG (A1c-Derived Average Glucose) study, using the formula: eAG (mg/dL) = 28.7 × HbA1c (%) − 46.7.

The clinical value of reporting eAG alongside HbA1c is that it provides a glucose equivalent that patients can directly relate to the glucose values they see on their home blood glucose monitors, making HbA1c results more immediately meaningful and actionable in diabetes education and self-management discussions. Many patients who monitor their blood glucose regularly have difficulty understanding what their HbA1c result means in practical terms; reporting the equivalent average glucose in familiar units bridges this communication gap. The eAG also facilitates comparison between HbA1c-based average glucose and continuous glucose monitoring (CGM) average glucose data in patients using both monitoring methods. Results are CLIA-certified (USA) and IVDR-compliant (EU/UK), delivered to the practitioner portal within 1–3 business days.

What does the HbA1c with eAG Test measure?

HbA1c (Glycated Haemoglobin — A1c) — the percentage of haemoglobin that is glycated, reflecting average blood glucose over the preceding 2–3 months. The primary diagnostic and monitoring marker for diabetes and pre-diabetes.

eAG (Estimated Average Glucose — calculated) — the average plasma glucose equivalent corresponding to the measured HbA1c, reported in both mmol/L and mg/dL. A HbA1c of 53 mmol/mol (7.0%) corresponds to an eAG of approximately 8.6 mmol/L (154 mg/dL); a HbA1c of 64 mmol/mol (8.0%) corresponds to approximately 10.2 mmol/L (183 mg/dL).

Clinical indications

Diabetes monitoring with patient-friendly glucose equivalent — for practitioners whose diabetic patients monitor blood glucose at home, the eAG provides an average glucose value in familiar units that directly complements their day-to-day glucose monitoring experience.

Type 1 and type 2 diabetes glycaemic control review — the eAG enables practitioners to frame the glycaemic control discussion in units the patient already understands, facilitating more informed and productive diabetes management consultations.

CGM data comparison — in patients using continuous glucose monitoring, the eAG provides a calculated average glucose that can be compared with the CGM-reported time-in-range and average glucose, identifying discrepancies that may suggest altered red cell turnover.

Patient diabetes education and engagement — the eAG is a valuable patient education tool; framing the HbA1c result as an average daily glucose helps patients understand what their long-term glycaemic control means relative to their self-monitored values, improving engagement with treatment targets.

Annual diabetes review documentation — HbA1c with eAG provides complete glycaemic documentation for the annual diabetes review, giving both the standard HbA1c value required for clinical records and the patient-facing glucose equivalent for shared decision-making.

Sample type and collection

Blood (whole blood — EDTA). No fasting required. Venepuncture at an approved collection site. Same collection requirements as standard HbA1c. eAG is a calculated value derived from the HbA1c result — no additional specimen or testing is required. HbA1c interpretation limitations (haemoglobin variants, haemolytic anaemia, iron deficiency) apply to both HbA1c and the derived eAG.

Turnaround time

1–3 business days from specimen receipt.

Availability

USA · EU · UK · Canada

Compliance

CLIA Certified · IVDR Compliant · CE Marked · HIPAA Compliant · GDPR Compliant · PIPEDA Compliant

How to order

Register free at BiomarkersLabs.com. Licensed practitioners only. Pay per test — no subscription required. Results are delivered directly and securely to your practitioner portal and are never released directly to patients.