Iron & TIBC Panel

Fasting Required
CPT: 83540, 83550
Iron

What This Test Measures

Combined iron and TIBC measurement; provides transferrin saturation for iron status assessment.

Preparation

Fasting required (8-12 hours)
Fasting required (8–12 hours). Draw in the morning — iron levels follow a diurnal rhythm, peaking in the morning. Iron supplements should be discontinued 24–48 hours before testing per some guidelines (check with your provider).
💬 Patient Community Notes

PREP: Fast 12 hours. Stop iron supplements for up to 5 days before testing (per STTM/Iron Institute) to see what your body is truly holding onto. Draw in the morning for consistency. The functional medicine community interprets the full panel together: optimal serum iron ~110 for women/~130s for men, transferrin sat ~35%/~38%, TIBC low 300s, ferritin 70–100. If all three (iron, sat, ferritin) are high, test for hemochromatosis. Always check CRP alongside ferritin. These notes reflect common practices in thyroid/functional medicine communities.

Reflects common practices in thyroid, BHRT, and functional medicine communities. This may differ from standard clinical guidelines. Not medical advice — always discuss with your provider.

General guidelines only. Requirements vary by lab and individual. Confirm with your provider before adjusting any medications.

Turnaround Time

Varies by lab

Clinical Notes

Transferrin saturation = (Iron/TIBC) x 100; >45% suggests iron overload

ICD-10 Codes

Common diagnosis codes associated with this test. Codes are assigned by your provider.

D50.9Iron deficiency anemia, unspecified
D64.9Anemia, unspecified
R53.83Other fatigue

Self-Pay Pricing

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Life Extension

Uses Labcorp network; known for supplement company; competitive lab test pricing

$28.00Order
Ulta Lab Tests

Uses Quest Diagnostics network; generally lowest DTC prices; not available in NY, NJ, RI

$28.00Order
Walk-In Lab

Uses both Quest and Labcorp networks; competitive pricing; broad test selection

$29.00Order
DirectLabs

Uses Quest Diagnostics network; good panel pricing; established DTC provider

$33.00Order
Request A Test

Uses Quest and Labcorp networks; offers both individual tests and discounted panels

$39.00Order
HealthLabs.com

Uses Quest and Labcorp; strong panel bundling; results in 1-3 days

$39.00Order
Personalabs

Uses Quest and Labcorp; no hidden draw or facility fees; moderate pricing

$42.00Order
Labcorp OnDemand

Labcorp consumer-direct platform; 2,000+ locations; results in 1-3 days

$45.00Order
QuestDirect

Quest Diagnostics consumer-direct platform; results in 1-2 days; 2,100+ locations nationwide

$49.00Order
Private MD Labs

Primarily uses Labcorp network; popular for hormone panels; higher individual test prices

$55.00Order

Lab Codes

Proprietary codes used by each lab for this test.

ACL Laboratories
LAB8203(order)
LabCorp
001321(order_code)
Mayo Clinic Labs
TIBC(order_code)
Quest Diagnostics
7573(order_code)

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Related Tests

UIBC (Unsaturated Iron Binding Capacity)

CPT: 83550

Ferritin

CPT: 82728

Iron, Serum

CPT: 83540

TIBC (Total Iron Binding Capacity)

CPT: 83550

Soluble Transferrin Receptor (sTfR)

CPT: 84466

Iron and TIBC Panel

CPT: 83540, 83550

For informational purposes only

This page is for educational and research purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. ICD-10 and CPT codes are assigned by your healthcare provider. Always consult a qualified healthcare provider before ordering any lab test or making decisions about your health.