Your Australian Pathology Referral Letter, Decoded

A standard Australian pathology requisition contains seven key sections: (1) Provider details — your GP's name, provider number (a unique Medicare identifier), practice address, and phone. This is how Medicare knows who ordered the tests and who gets the results. (2) Patient details — your full legal name, date of birth, Medicare number and IRN (Individual Reference Number, the digit after your card number), and address. The Medicare number is what triggers rebate eligibility — without it, all tests are private pay.

(3) Test list — the actual tests ordered, written as clinical names or abbreviations (e.g., 'FBE, UEC, LFT, lipids, TSH, free T4, testosterone, 25-OH vit D'). Some GPs use tick-boxes on preprinted forms; others write requests free-hand. The pathology lab maps these to MBS item numbers to process the rebate. (4) Clinical indication — a brief note explaining why the tests are ordered (e.g., 'routine health screen', 'fatigue', 'monitoring known hypothyroidism'). This is technically required for Medicare but often written as a shorthand only the lab and GP understand.

(5) Urgency — 'routine' or 'urgent'. Urgent requests get same-day or next-day turnaround and cost the GP's practice more through the lab — use it only when necessary. (6) Copy-to details — other doctors who should receive the results (e.g., a specialist). (7) Signature and date — the requesting doctor must sign. E-referrals have a digital signature embedded.

Every pathology test on the Medicare Benefits Schedule (MBS) has a unique item number. When the lab processes your form, it assigns MBS items to the tests ordered and submits a claim. Medicare pays the lab (for bulk-billing) or reimburses you (for non-bulk-billed services). Key item numbers you'll encounter: FBE (Full Blood Examination): MBS 65070. Urea, electrolytes, creatinine (UEC/EUC): MBS 66500. Liver function tests (LFT): MBS 66536. Fasting glucose: MBS 66841. HbA1c: MBS 66551. Lipid panel: MBS 66842. TSH: MBS 66716. Free T4: MBS 66719. Testosterone (total): MBS 66833.

Some tests are only rebatable under specific clinical indications. Free testosterone (by dialysis) is not separately rebatable for most indication categories — labs may claim it as total testosterone and run both. PSA: MBS 66655 (only rebatable in men with a clinical indication — symptoms, positive DRE, or monitoring; not for asymptomatic screening under age 50 per MBS rules). Vitamin D (25-OH): MBS 66608 — rebatable only if there is a documented clinical indication for deficiency risk. Labs can reject the rebate if the clinical indication box is blank.

When a GP orders many tests in a single visit, the '5-test rule' applies: Medicare pays 100% of the scheduled fee for the first test, 75% for the second, 50% each for tests 3–5, and 25% for each additional test beyond five. The lab absorbs most of this if bulk-billing — you see none of this arithmetic. If the lab bills you directly, you'll see these rebate reductions.

ICD-10 (International Classification of Diseases, 10th revision) codes are diagnostic codes your GP may include on the pathology form to specify the clinical reason for testing. Not all Australian GPs include ICD-10 codes on pathology requests (they're mandatory in some private insurance contexts, advisory in Medicare), but you may see them on your requisition.

Common ICD-10 codes on men's health pathology requests: Z00.00 — General adult health examination (routine screen). E11 — Type 2 diabetes monitoring. E03.9 — Hypothyroidism (TSH, free T4 monitoring). E29.1 — Testicular hypofunction (testosterone testing). Z87.39 — Personal history of cardiovascular disease (lipid monitoring). D50 — Iron deficiency anaemia (ferritin, FBE). Z13.6 — Screening for cardiovascular disorders.

If your GP has written 'R/O hypogonadism' (rule out hypogonadism) or similar on the form, this is a clinical indication that justifies testosterone testing under Medicare. Without a documented clinical indication, testosterone is not rebatable for asymptomatic screening — which is why some GPs add 'fatigue' or 'reduced libido' as the indication. This is standard clinical practice when those symptoms are genuinely present.

Fully covered (bulk-billed with Medicare card): FBE, UEC, LFT, fasting glucose, HbA1c, lipids, TSH, free T4, vitamin D (with indication), ferritin, B12, folate, PSA (with indication), testosterone (with indication). Not covered / private pay: Free testosterone by equilibrium dialysis (as a standalone), advanced lipid testing (ApoB, LDL particle number), fasting insulin (not on MBS for routine screening), DHEA-S in most indications, IGF-1, most genetic tests, most advanced hormone panels.

Private add-ons at Laverty/Dorevitch/SN can be self-funded on top of a bulk-billed request — you pay out-of-pocket for the add-ons while the Medicare-listed tests are bulk-billed. Ask the lab at collection time. Costs: fasting insulin typically $25–$45, ApoB $35–$60, free testosterone by dialysis $80–$140.

If you are not a Medicare cardholder (e.g., a tourist, working holiday visa holder without AU Medicare, or an Australian expat who has de-enrolled from Medicare), all tests are private pay. A full metabolic panel (FBE, UEC, LFT, lipids, thyroid, testosterone, vitamins) out-of-pocket runs approximately $150–$350 depending on the lab and location.

Since 2019, most Australian GP practices have migrated to electronic pathology requests. Your GP generates a request in their clinical software (Best Practice, Medical Director, Genie), it is either printed with a barcode or sent electronically to the lab network. You may receive a printout with a barcode, or your GP may tell you to simply present your Medicare card — the lab retrieves the request electronically.

E-referrals are more secure, faster to process, and slightly reduce transcription errors. They also allow the GP to attach the results automatically into your patient record when they return. The clinical content is identical to a paper form — the difference is transmission method only.

If your GP has sent an eReferral and you've lost the printout, go to the lab and give your Medicare number — they will find it. If the request doesn't appear (it can take 10–30 minutes to propagate from the GP's system), call the GP surgery and ask them to resend or print a backup. Don't let the lab turn you away — the request almost certainly exists.

If you want a test that your GP didn't include — say, fasting insulin or DHEA-S — you have two options. First: call the GP and ask them to add it. Most GP software allows addendum orders without a new consultation. Second: pay for it privately at the collection centre by telling the phlebotomist you want to self-fund additional tests.

FORM clients receive a private requisition that covers any panel combination without requiring a GP visit. This is useful for: testing outside standard GP scope (e.g., full hormone panels, fasting insulin, ApoB), speed (no waiting for a GP appointment), and privacy (results come to you directly, reviewed by Dr. Nikola, not through the GP system unless you choose).

Important: if you pay privately for a test at a Medicare-listed lab, you cannot later claim a Medicare rebate for that test at the same episode of care. You can, however, ask your GP to order it on a future form and get the rebate then. The private FORM pathway is separate from and does not affect your Medicare entitlements for other services.